diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c349419..b4e3c0e 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -11,12 +11,13 @@ endif()
 include(UsePkgConfig)
 pkgconfig(gtk+-2.0 GTK2_INCLUDE_DIR GTK2_LINK_DIR GTK2_LINK_FLAGS GTK2_CFLAGS)
 
-option(ENABLE_GTK ON)
+if (UNIX AND NOT APPLE)
+	set(LINUX TRUE)
+endif()
 
-if (ENABLE_GTK)
+if (LINUX)
 	include_directories(${GTK2_INCLUDE_DIR})
 	add_definitions(${GTK2_CFLAGS})
-	add_definitions(-DENABLE_GTK)
 	add_library(updatergtk SHARED UpdateDialogGtk.cpp UpdateDialogGtk.h)
 	target_link_libraries(updatergtk ${GTK2_LINK_FLAGS})
 endif()
@@ -64,7 +65,7 @@ if (UNIX)
 	set(SOURCES ${SOURCES} UpdateDialogAscii.cpp)
 endif()
 
-if (ENABLE_GTK)
+if (LINUX)
 	# embed the GTK helper library into the updater binary.
 	# At runtime it will be extracted and loaded if the
 	# GTK libraries are available
diff --git a/src/main.cpp b/src/main.cpp
index db775f3..3774926 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -9,9 +9,7 @@
 #include "tinythread.h"
 
 #if defined(PLATFORM_LINUX)
-  #if defined(ENABLE_GTK)
-  	#include "UpdateDialogGtkWrapper.h"
-  #endif
+  #include "UpdateDialogGtkWrapper.h"
   #include "UpdateDialogAscii.h"
 #endif
 
@@ -99,7 +97,6 @@ int main(int argc, char** argv)
 #ifdef PLATFORM_LINUX
 void runWithUi(int argc, char** argv, UpdateInstaller* installer)
 {
-#ifdef ENABLE_GTK
 	UpdateDialogAscii asciiDialog;
 	UpdateDialogGtkWrapper dialog;
 	bool useGtk = dialog.init(argc,argv);
@@ -118,10 +115,6 @@ void runWithUi(int argc, char** argv, UpdateInstaller* installer)
 		dialog.exec();
 	}
 	updaterThread.join();
-#else
-	// no UI available - do a silent install
-	installer->run();
-#endif
 }
 #endif