Include missing header file.

diff --git a/src/preferences.c b/src/preferences.c
index 5005d1e..a2dea4d 100644 (file)
--- a/src/preferences.c
+++ b/src/preferences.c
@@ -15,6 +15,7 @@
 #include "preferences.h"
 
 #include "bar_exif.h"
+#include "cache.h"
 #include "cache_maint.h"
 #include "editors.h"
 #include "exif.h"