diff --git a/backends/CMakeLists.txt b/backends/CMakeLists.txt
index d58037be5ca97777df8f9d3e9027eb929c8e9e79..ac9b6f0b592109b3ba66564eb8b41473860354cf 100644
--- a/backends/CMakeLists.txt
+++ b/backends/CMakeLists.txt
@@ -1,5 +1,5 @@
 if (PROTOBUF_FOUND)
-	if ( PURPLE_LIBRARY AND PURPLE_INCLUDE_DIR )
+	if (PURPLE_FOUND)
 		ADD_SUBDIRECTORY(libpurple)
 	endif()