diff --git a/configure.in.in b/configure.in.in
index 79d4ecb..d122d05 100644
--- a/configure.in.in
+++ b/configure.in.in
@@ -1,4 +1,5 @@
 #MIN_CONFIG(3.3)
+KDE_ENABLE_HIDDEN_VISIBILITY
 AC_HEADER_DIRENT
 AC_HEADER_STDC
 AC_CHECK_HEADERS(fcntl.h sys/sysctl.h sys/param.h sys/time.h sys/types.h unistd.h values.h sys/limits.h err.h sys/cdefs.h)