diff --git a/kopete/plugins/nowlistening/ConfigureChecks.cmake b/kopete/plugins/nowlistening/ConfigureChecks.cmake
index 33b0830a..c1780d68 100644
--- a/kopete/plugins/nowlistening/ConfigureChecks.cmake
+++ b/kopete/plugins/nowlistening/ConfigureChecks.cmake
@@ -13,7 +13,7 @@
 if( WITH_XMMS )
   find_program( XMMS_CONFIG xmms-config )
   if( XMMS_CONFIG )
-    set( HAVE_XMMS 1 )
+    set( HAVE_XMMS 1 CACHE INTERNAL "" )
     EXECUTE_PROCESS( COMMAND ${XMMS_CONFIG} '--cflags' OUTPUT_VARIABLE XMMS_INCLUDES )
     EXECUTE_PROCESS( COMMAND ${XMMS_CONFIG} '--libs'   OUTPUT_VARIABLE XMMS_LIBS     )
   else( )