diff --git a/src/gtk/tooltip.cpp b/src/gtk/tooltip.cpp
index cd0a8670e3..bbe7fa2fbb 100644
--- a/src/gtk/tooltip.cpp
+++ b/src/gtk/tooltip.cpp
@@ -11,7 +11,9 @@
     #pragma implementation "tooltip.h"
 #endif
 
-#ifdef wxUSE_TOOLTIPS
+#include "wx/defs.h"
+
+#if wxUSE_TOOLTIPS
 
 #include "wx/window.h"
 #include "wx/tooltip.h"
diff --git a/src/gtk/window.cpp b/src/gtk/window.cpp
index 32f42e8f77..7f2da39fec 100644
--- a/src/gtk/window.cpp
+++ b/src/gtk/window.cpp
@@ -24,7 +24,9 @@
 #if wxUSE_DRAG_AND_DROP
 #include "wx/dnd.h"
 #endif
+#if wxUSE_TOOLTIPS
 #include "wx/tooltip.h"
+#endif
 #include "wx/menu.h"
 #include "wx/statusbr.h"
 #include "wx/intl.h"
diff --git a/src/gtk1/tooltip.cpp b/src/gtk1/tooltip.cpp
index cd0a8670e3..bbe7fa2fbb 100644
--- a/src/gtk1/tooltip.cpp
+++ b/src/gtk1/tooltip.cpp
@@ -11,7 +11,9 @@
     #pragma implementation "tooltip.h"
 #endif
 
-#ifdef wxUSE_TOOLTIPS
+#include "wx/defs.h"
+
+#if wxUSE_TOOLTIPS
 
 #include "wx/window.h"
 #include "wx/tooltip.h"
diff --git a/src/gtk1/window.cpp b/src/gtk1/window.cpp
index 32f42e8f77..7f2da39fec 100644
--- a/src/gtk1/window.cpp
+++ b/src/gtk1/window.cpp
@@ -24,7 +24,9 @@
 #if wxUSE_DRAG_AND_DROP
 #include "wx/dnd.h"
 #endif
+#if wxUSE_TOOLTIPS
 #include "wx/tooltip.h"
+#endif
 #include "wx/menu.h"
 #include "wx/statusbr.h"
 #include "wx/intl.h"