diff --git a/kalzium/src/kalzium.cpp b/kalzium/src/kalzium.cpp
index a6eb41e1..011aecb6 100644
--- a/kalzium/src/kalzium.cpp
+++ b/kalzium/src/kalzium.cpp
@@ -32,7 +32,7 @@
 #include "kalziumutils.h"
 #include "config.h"
 
-#include <tqdoctwindow.h>
+#include <tqdockwindow.h>
 #include <tqlayout.h>
 #include <tqtoolbox.h>
 #include <tqslider.h>