diff --git a/libxrdp/xrdp_sec.c b/libxrdp/xrdp_sec.c
index 5b87042a..6d3e8374 100644
--- a/libxrdp/xrdp_sec.c
+++ b/libxrdp/xrdp_sec.c
@@ -908,7 +908,10 @@ xrdp_sec_process_mcs_data(struct xrdp_sec *self)
             case SEC_TAG_CLI_CRYPT:
                 break;
             case SEC_TAG_CLI_CHANNELS:
-                xrdp_sec_process_mcs_data_channels(self, s);
+                if (xrdp_sec_process_mcs_data_channels(self, s) != 0)
+                {
+                    return 1;
+                }
                 break;
             case SEC_TAG_CLI_4:
                 break;