diff --git a/src/gtk/frame.cpp b/src/gtk/frame.cpp
index 751e7631cb..a5b565ffcb 100644
--- a/src/gtk/frame.cpp
+++ b/src/gtk/frame.cpp
@@ -32,12 +32,13 @@
 #endif
 #include "wx/dcclient.h"
 
-#include "glib.h"
-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
+#include <glib.h>
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
+#include <gdk/gdkx.h>
+
 #include "wx/gtk/win_gtk.h"
-#include "gdk/gdkkeysyms.h"
-#include "gdk/gdkx.h"
 
 // ----------------------------------------------------------------------------
 // constants
diff --git a/src/gtk/gauge.cpp b/src/gtk/gauge.cpp
index ecc9b39d77..6cfcc74b0e 100644
--- a/src/gtk/gauge.cpp
+++ b/src/gtk/gauge.cpp
@@ -15,8 +15,8 @@
 
 #if wxUSE_GAUGE
 
-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
 
 //-----------------------------------------------------------------------------
 // wxGauge
diff --git a/src/gtk1/frame.cpp b/src/gtk1/frame.cpp
index 751e7631cb..a5b565ffcb 100644
--- a/src/gtk1/frame.cpp
+++ b/src/gtk1/frame.cpp
@@ -32,12 +32,13 @@
 #endif
 #include "wx/dcclient.h"
 
-#include "glib.h"
-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
+#include <glib.h>
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
+#include <gdk/gdkx.h>
+
 #include "wx/gtk/win_gtk.h"
-#include "gdk/gdkkeysyms.h"
-#include "gdk/gdkx.h"
 
 // ----------------------------------------------------------------------------
 // constants
diff --git a/src/gtk1/gauge.cpp b/src/gtk1/gauge.cpp
index ecc9b39d77..6cfcc74b0e 100644
--- a/src/gtk1/gauge.cpp
+++ b/src/gtk1/gauge.cpp
@@ -15,8 +15,8 @@
 
 #if wxUSE_GAUGE
 
-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
 
 //-----------------------------------------------------------------------------
 // wxGauge