diff --git a/uppsrc/CtrlLib/ChGtk.cpp b/uppsrc/CtrlLib/ChGtk.cpp
index 7b757e715..aba6bde38 100644
--- a/uppsrc/CtrlLib/ChGtk.cpp
+++ b/uppsrc/CtrlLib/ChGtk.cpp
@@ -1,3 +1,6 @@
+#ifdef PLATFORM_X11
+#ifndef flagNOGTK
+
 #include "CtrlLib.h"
 #include "ChGtk.h"
 
@@ -719,3 +722,6 @@ void ChHostSkin()
 }
 
 END_UPP_NAMESPACE
+
+#endif
+#endif
diff --git a/uppsrc/CtrlLib/ChGtk.h b/uppsrc/CtrlLib/ChGtk.h
index e70235d76..bbc62e604 100644
--- a/uppsrc/CtrlLib/ChGtk.h
+++ b/uppsrc/CtrlLib/ChGtk.h
@@ -1,3 +1,5 @@
+#ifdef PLATFORM_X11
+
 #define Time    XTime
 #define Font    XFont
 #define Display XDisplay
@@ -124,3 +126,5 @@ int    GtkStyleInt(const char *name);
 String GtkStyleString(const char *name);
 
 };
+
+#endif
diff --git a/uppsrc/CtrlLib/ChGtk0.cpp b/uppsrc/CtrlLib/ChGtk0.cpp
index 3b91f6f9d..2c873780a 100644
--- a/uppsrc/CtrlLib/ChGtk0.cpp
+++ b/uppsrc/CtrlLib/ChGtk0.cpp
@@ -528,6 +528,4 @@ String GtkStyleString(const char *name)
 END_UPP_NAMESPACE
 
 #endif
-
 #endif
-