diff --git a/configure.in.in b/configure.in.in
index ffca859..37a03bc 100644
--- a/configure.in.in
+++ b/configure.in.in
@@ -1,4 +1,5 @@
 #MIN_CONFIG
+KDE_ENABLE_HIDDEN_VISIBILITY
 
 AM_INIT_AUTOMAKE(kdirstat,2.4.4)