diff --git a/configure.in.in b/configure.in.in
index 157a6ba..45009a8 100644
--- a/configure.in.in
+++ b/configure.in.in
@@ -30,6 +30,7 @@ if test "$no_x" = yes; then
 fi
 
 KDE_SET_DEFAULT_BINDIRS
+KDE_ENABLE_HIDDEN_VISIBILITY
 
 CHMLIBDIR="lib/chmlib"
 EXTRA_SUBDIRS=""