diff --git a/MagickCore/cache-private.h b/MagickCore/cache-private.h
index a6be29f..fac96c0 100644
--- a/MagickCore/cache-private.h
+++ b/MagickCore/cache-private.h
@@ -23,6 +23,7 @@
 #endif
 
 #include <time.h>
+#include "MagickCore/cache.h"
 #include "MagickCore/random_.h"
 #include "MagickCore/thread-private.h"
 #include "MagickCore/semaphore.h"