diff --git a/development/cmake/modules/LyXMacros.cmake b/development/cmake/modules/LyXMacros.cmake
index eec6ff7ee4..2d0a1ff949 100644
--- a/development/cmake/modules/LyXMacros.cmake
+++ b/development/cmake/modules/LyXMacros.cmake
@@ -268,7 +268,8 @@ macro(lyx_add_info_files group)
 			endif()
 		endif()
 	endforeach()
-	if(group)
+	set(check_group ${group}) #cmake bug?
+	if(check_group)
 		source_group(${group} FILES ${lyx_${group}_info_files})
 	endif()
 	set(lyx_info_files ${lyx_info_files} ${lyx_${group}_info_files})