diff --git a/config-okular.h.cmake b/config-okular.h.cmake
index 0caea358a..b999a1c39 100644
--- a/config-okular.h.cmake
+++ b/config-okular.h.cmake
@@ -1,9 +1,9 @@
 /* Defines if force the use DRM in okular */
 #define OKULAR_FORCE_DRM ${_OKULAR_FORCE_DRM}
 
 /* Defines if the purpose framework is available */
 #define PURPOSE_FOUND ${PURPOSE_FOUND}
 
-/* Defines if the purpose framework is available */
+/* Defines whether the malloc_trim method from malloc.h is available */
 #cmakedefine01 HAVE_MALLOC_TRIM