--- digikam-5.7.0.orig/core/CMakeLists.txt
+++ digikam-5.7.0/core/CMakeLists.txt
@@ -225,7 +225,7 @@
 
 if(ENABLE_MEDIAPLAYER)
 
-    if(NOT ${QTAV_FOUND} OR ${QTAV_VERSION_STRING} VERSION_LESS ${QTAV_MIN_VERSION})
+    if(NOT ${QTAV_FOUND} OR "${QTAV_VERSION_STRING}" VERSION_LESS ${QTAV_MIN_VERSION})
 
         set(ENABLE_MEDIAPLAYER OFF)
         set(QTAV_FOUND OFF)
