diff --git a/common/log.c b/common/log.c
index 1338287a..77bcc6d6 100644
--- a/common/log.c
+++ b/common/log.c
@@ -395,7 +395,7 @@ enum logReturns DEFAULT_CC
 internalInitAndAllocStruct(void)
 {
     enum logReturns ret = LOG_GENERAL_ERROR;
-    g_staticLogConfig = g_malloc(sizeof(struct log_config), 1);
+    g_staticLogConfig = g_new0(struct log_config, 1);
 
     if (g_staticLogConfig != NULL)
     {
diff --git a/common/ssl_calls.c b/common/ssl_calls.c
index 3d9e1c2e..e3d3e67e 100644
--- a/common/ssl_calls.c
+++ b/common/ssl_calls.c
@@ -187,7 +187,7 @@ ssl_des3_decrypt_info_create(const char *key, const char* ivec)
     const tui8 *lkey;
     const tui8 *livec;
 
-    des3_ctx = g_malloc(sizeof(EVP_CIPHER_CTX), 1);
+    des3_ctx = g_new0(EVP_CIPHER_CTX, 1);
     EVP_CIPHER_CTX_init(des3_ctx);
     lkey = (const tui8 *) key;
     livec = (const tui8 *) ivec;
diff --git a/sesman/chansrv/chansrv.c b/sesman/chansrv/chansrv.c
index c1f41499..a521581d 100644
--- a/sesman/chansrv/chansrv.c
+++ b/sesman/chansrv/chansrv.c
@@ -97,7 +97,7 @@ add_timeout(int msoffset, void (*callback)(void *data), void *data)
 
     LOG(10, ("add_timeout:"));
     now = g_time3();
-    tobj = g_malloc(sizeof(struct timeout_obj), 1);
+    tobj = g_new0(struct timeout_obj, 1);
     tobj->mstime = now + msoffset;
     tobj->callback = callback;
     tobj->data = data;
diff --git a/sesman/chansrv/devredir.c b/sesman/chansrv/devredir.c
index c29c7e43..bb10a6c9 100644
--- a/sesman/chansrv/devredir.c
+++ b/sesman/chansrv/devredir.c
@@ -962,7 +962,8 @@ dev_redir_proc_query_dir_response(IRP *irp,
         //log_debug("FileNameLength:    %d", FileNameLength);
         log_debug("FileName:          %s", filename);
 
-        if ((xinode = calloc(1, sizeof(struct xrdp_inode))) == NULL)
+        xinode = g_new0(struct xrdp_inode, 1);
+        if (xinode == NULL)
         {
             log_error("system out of memory");
             fuse_data = devredir_fuse_data_peek(irp);
@@ -1378,7 +1379,8 @@ devredir_fuse_data_enqueue(IRP *irp, void *vp)
     if (irp == NULL)
         return -1;
 
-    if ((fd = calloc(1, sizeof(FUSE_DATA))) == NULL)
+    fd = g_new0(FUSE_DATA, 1);
+    if (fd == NULL)
         return -1;
 
     fd->data_ptr = vp;
@@ -1481,7 +1483,7 @@ devredir_cvt_from_unicode_len(char *path, char *unicode, int len)
     bytes_to_alloc = (((len / 2) * sizeof(twchar)) + sizeof(twchar));
 
     src = unicode;
-    dest = g_malloc(bytes_to_alloc, 1);
+    dest = g_new0(char, bytes_to_alloc);
     dest_saved = dest;
 
     for (i = 0; i < len; i += 2)
diff --git a/sesman/chansrv/irp.c b/sesman/chansrv/irp.c
index 2a5209d8..ad318cb1 100644
--- a/sesman/chansrv/irp.c
+++ b/sesman/chansrv/irp.c
@@ -77,7 +77,8 @@ IRP * devredir_irp_new()
     log_debug("entered");
 
     /* create new IRP */
-    if ((irp = g_malloc(sizeof(IRP), 1)) == NULL)
+    irp = g_new0(IRP, 1);
+    if (irp == NULL)
     {
         log_error("system out of memory!");
         return NULL;
diff --git a/sesman/chansrv/rail.c b/sesman/chansrv/rail.c
index 8a23973a..36e39889 100644
--- a/sesman/chansrv/rail.c
+++ b/sesman/chansrv/rail.c
@@ -238,7 +238,7 @@ rail_get_window_data_safe(Window window)
     {
         return rv;
     }
-    rv = g_malloc(sizeof(struct rail_window_data), 1);
+    rv = g_new0(struct rail_window_data, 1);
     rail_set_window_data(window, rv);
     g_free(rv);
     return rail_get_window_data(window);
diff --git a/sesman/chansrv/smartcard.c b/sesman/chansrv/smartcard.c
index 38d80c8b..1e692909 100644
--- a/sesman/chansrv/smartcard.c
+++ b/sesman/chansrv/smartcard.c
@@ -900,7 +900,8 @@ scard_add_new_device(tui32 device_id)
         return -1;
     }
 
-    if ((sc = g_malloc(sizeof(SMARTCARD), 1)) == NULL)
+    sc = g_new0(SMARTCARD, 1);
+    if (sc == NULL)
     {
         log_error("system out of memory");
         return -1;
diff --git a/sesman/chansrv/smartcard_pcsc.c b/sesman/chansrv/smartcard_pcsc.c
index bf3d11bb..16938bf9 100644
--- a/sesman/chansrv/smartcard_pcsc.c
+++ b/sesman/chansrv/smartcard_pcsc.c
@@ -97,7 +97,7 @@ create_uds_client(struct trans *con)
     {
         return 0;
     }
-    uds_client = g_malloc(sizeof(struct pcsc_uds_client), 1);
+    uds_client = g_new0(struct pcsc_uds_client, 1);
     if (uds_client == 0)
     {
         return 0;
@@ -606,7 +606,7 @@ scard_process_list_readers(struct trans *con, struct stream *in_s)
         g_free(groups);
         return 1;
     }
-    pcscListReaders = g_malloc(sizeof(struct pcsc_list_readers), 1);
+    pcscListReaders = g_new0(struct pcsc_list_readers, 1);
     pcscListReaders->uds_client_id = uds_client->uds_client_id;
     pcscListReaders->cchReaders = cchReaders;
     scard_send_list_readers(pcscListReaders, lcontext->context,
diff --git a/sesman/libscp/libscp_connection.c b/sesman/libscp/libscp_connection.c
index 6366d51a..a04c4388 100644
--- a/sesman/libscp/libscp_connection.c
+++ b/sesman/libscp/libscp_connection.c
@@ -33,7 +33,7 @@ scp_connection_create(int sck)
 {
     struct SCP_CONNECTION *conn;
 
-    conn = g_malloc(sizeof(struct SCP_CONNECTION), 0);
+    conn = g_new(struct SCP_CONNECTION, 1);
 
     if (0 == conn)
     {
diff --git a/sesman/libscp/libscp_v1c.c b/sesman/libscp/libscp_v1c.c
index 7d1b9db8..7bc9a1d3 100644
--- a/sesman/libscp/libscp_v1c.c
+++ b/sesman/libscp/libscp_v1c.c
@@ -224,7 +224,7 @@ scp_v1c_get_session_list(struct SCP_CONNECTION *c, int *scount,
             in_uint32_be(c->in_s, sescnt);
             sestmp = sescnt;
 
-            ds = g_malloc(sizeof(struct SCP_DISCONNECTED_SESSION) * sescnt, 0);
+            ds = g_new(struct SCP_DISCONNECTED_SESSION, sescnt);
 
             if (ds == 0)
             {
@@ -429,7 +429,7 @@ _scp_v1c_check_response(struct SCP_CONNECTION *c, struct SCP_SESSION *s)
             g_free(s->errstr);
         }
 
-        s->errstr = g_malloc(dim + 1, 0);
+        s->errstr = g_new(char, dim + 1);
 
         if (s->errstr == 0)
         {
@@ -450,7 +450,7 @@ _scp_v1c_check_response(struct SCP_CONNECTION *c, struct SCP_SESSION *s)
             g_free(s->errstr);
         }
 
-        s->errstr = g_malloc(dim + 1, 0);
+        s->errstr = g_new(char, dim + 1);
 
         if (s->errstr == 0)
         {
@@ -471,7 +471,7 @@ _scp_v1c_check_response(struct SCP_CONNECTION *c, struct SCP_SESSION *s)
             g_free(s->errstr);
         }
 
-        s->errstr = g_malloc(dim + 1, 0);
+        s->errstr = g_new(char, dim + 1);
 
         if (s->errstr == 0)
         {
diff --git a/sesman/libscp/libscp_v1c_mng.c b/sesman/libscp/libscp_v1c_mng.c
index 59762e36..d9b43b98 100644
--- a/sesman/libscp/libscp_v1c_mng.c
+++ b/sesman/libscp/libscp_v1c_mng.c
@@ -199,7 +199,7 @@ scp_v1c_mng_get_session_list(struct SCP_CONNECTION *c, int *scount,
                 return SCP_CLIENT_STATE_LIST_OK;
             }
 
-            ds = g_malloc(sizeof(struct SCP_DISCONNECTED_SESSION) * sescnt, 0);
+            ds = g_new(struct SCP_DISCONNECTED_SESSION, sescnt);
 
             if (ds == 0)
             {
diff --git a/sesman/sesman.c b/sesman/sesman.c
index 828524fa..c9666943 100644
--- a/sesman/sesman.c
+++ b/sesman/sesman.c
@@ -247,7 +247,7 @@ main(int argc, char **argv)
     }
 
     /* reading config */
-    g_cfg = g_malloc(sizeof(struct config_sesman), 1);
+    g_cfg = g_new0(struct config_sesman, 1);
 
     if (0 == g_cfg)
     {
diff --git a/sesman/session.c b/sesman/session.c
index 28e00fc9..79128e5e 100644
--- a/sesman/session.c
+++ b/sesman/session.c
@@ -959,7 +959,7 @@ session_get_bypid(int pid)
     struct session_chain *tmp;
     struct session_item *dummy;
 
-    dummy = g_malloc(sizeof(struct session_item), 1);
+    dummy = g_new0(struct session_item, 1);
 
     if (0 == dummy)
     {
@@ -1033,7 +1033,7 @@ session_get_byuser(char *user, int *cnt, unsigned char flags)
     }
 
     /* malloc() an array of disconnected sessions */
-    sess = g_malloc(count *sizeof(struct SCP_DISCONNECTED_SESSION), 1);
+    sess = g_new0(struct SCP_DISCONNECTED_SESSION, count);
 
     if (sess == 0)
     {
diff --git a/sesman/sig.c b/sesman/sig.c
index b10be5fb..3cc3395a 100644
--- a/sesman/sig.c
+++ b/sesman/sig.c
@@ -75,7 +75,7 @@ sig_sesman_reload_cfg(int sig)
         return;
     }
 
-    cfg = g_malloc(sizeof(struct config_sesman), 1);
+    cfg = g_new0(struct config_sesman, 1);
 
     if (0 == cfg)
     {
diff --git a/sesman/verify_user_pam.c b/sesman/verify_user_pam.c
index 29f21225..43783211 100644
--- a/sesman/verify_user_pam.c
+++ b/sesman/verify_user_pam.c
@@ -54,7 +54,7 @@ verify_pam_conv(int num_msg, const struct pam_message **msg,
     struct pam_response *reply;
     struct t_user_pass *user_pass;
 
-    reply = g_malloc(sizeof(struct pam_response) * num_msg, 1);
+    reply = g_new0(struct pam_response, num_msg);
 
     for (i = 0; i < num_msg; i++)
     {
@@ -109,7 +109,7 @@ auth_userpass(char *user, char *pass, int *errorcode)
     char service_name[256];
 
     get_service_name(service_name);
-    auth_info = g_malloc(sizeof(struct t_auth_info), 1);
+    auth_info = g_new0(struct t_auth_info, 1);
     g_strncpy(auth_info->user_pass.user, user, 255);
     g_strncpy(auth_info->user_pass.pass, pass, 255);
     auth_info->pamc.conv = &verify_pam_conv;
diff --git a/xrdp/xrdp_mm.c b/xrdp/xrdp_mm.c
index dfc04152..f1a01efa 100644
--- a/xrdp/xrdp_mm.c
+++ b/xrdp/xrdp_mm.c
@@ -764,7 +764,7 @@ xrdp_mm_process_rail_create_window(struct xrdp_mm* self, struct stream* s)
     in_uint16_le(s, title_bytes);
     if (title_bytes > 0)
     {
-        rwso.title_info = g_malloc(title_bytes + 1, 0);
+        rwso.title_info = g_new(char, title_bytes + 1);
         in_uint8a(s, rwso.title_info, title_bytes);
         rwso.title_info[title_bytes] = 0;
     }
@@ -947,7 +947,7 @@ xrdp_mm_process_rail_update_window_text(struct xrdp_mm* self, struct stream* s)
 
     g_memset(&rwso, 0, sizeof(rwso));
     in_uint32_le(s, size); /* title size */
-    rwso.title_info = g_malloc(size + 1, 0);
+    rwso.title_info = g_new(char, size + 1);
     in_uint8a(s, rwso.title_info, size);
     rwso.title_info[size] = 0;
     g_writeln("  set window title %s size %d 0x%8.8x", rwso.title_info, size, flags);
diff --git a/xrdp/xrdp_wm.c b/xrdp/xrdp_wm.c
index 3bb326f3..548742ac 100644
--- a/xrdp/xrdp_wm.c
+++ b/xrdp/xrdp_wm.c
@@ -62,7 +62,7 @@ xrdp_wm_create(struct xrdp_process *owner,
     self->current_surface_index = 0xffff; /* screen */
 
     /* to store configuration from xrdp.ini */
-    self->xrdp_config = g_malloc(sizeof(struct xrdp_config), 1);
+    self->xrdp_config = g_new0(struct xrdp_config, 1);
 
     return self;
 }
diff --git a/xup/xup.c b/xup/xup.c
index ef424b40..ada25c42 100644
--- a/xup/xup.c
+++ b/xup/xup.c
@@ -697,7 +697,7 @@ process_server_window_new_update(struct mod *mod, struct stream *s)
 
     if (title_bytes > 0)
     {
-        rwso.title_info = g_malloc(title_bytes + 1, 0);
+        rwso.title_info = g_new(char, title_bytes + 1);
         in_uint8a(s, rwso.title_info, title_bytes);
         rwso.title_info[title_bytes] = 0;
     }