diff --git a/clients/default/kdedefault.cpp b/clients/default/kdedefault.cpp
index 34058f657c..cf2d646a74 100644
--- a/clients/default/kdedefault.cpp
+++ b/clients/default/kdedefault.cpp
@@ -22,6 +22,7 @@
 #include "../../workspace.h"
 #include "../../options.h"
 #include "kdedefault.h"
+#include <qimage.h>
 
 using namespace KWinInternal;
 
diff --git a/clients/modernsystem/modernsys.cpp b/clients/modernsystem/modernsys.cpp
index 9b076090b5..9eec1eb98e 100644
--- a/clients/modernsystem/modernsys.cpp
+++ b/clients/modernsystem/modernsys.cpp
@@ -16,6 +16,7 @@
 
 #include "buttondata.h"
 #include "btnhighcolor.h"
+#include <qimage.h>
 
 using namespace KWinInternal;
 
diff --git a/clients/quartz/quartz.cpp b/clients/quartz/quartz.cpp
index 07f65b323f..4851817087 100644
--- a/clients/quartz/quartz.cpp
+++ b/clients/quartz/quartz.cpp
@@ -25,6 +25,7 @@
 #include "../../workspace.h"
 #include "../../options.h"
 #include "quartz.h"
+#include <qimage.h>
 
 using namespace KWinInternal;
 
diff --git a/clients/redmond/redmond.cpp b/clients/redmond/redmond.cpp
index e3653c4ff5..5f92068ada 100644
--- a/clients/redmond/redmond.cpp
+++ b/clients/redmond/redmond.cpp
@@ -23,6 +23,7 @@
 #include <qbitmap.h>
 #include "../../workspace.h"
 #include "../../options.h"
+#include <qimage.h>
 
 using namespace KWinInternal;