diff --git a/ChangeLog b/ChangeLog
index a2f226bf..46f8b188 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,7 @@
 - reverse similarity rotation direction to match the convention used 
   elsewhere in vips
 - fix blocked caching of sequential load operations
+- fix cache flags
 
 10/10/13	started 7.36.2
 - better jpeg startup
diff --git a/libvips/include/vips/operation.h b/libvips/include/vips/operation.h
index a03eb24b..97c2675f 100644
--- a/libvips/include/vips/operation.h
+++ b/libvips/include/vips/operation.h
@@ -41,7 +41,7 @@ typedef enum /*< flags >*/ {
 	VIPS_OPERATION_NONE = 0,
 	VIPS_OPERATION_SEQUENTIAL = 1,
 	VIPS_OPERATION_SEQUENTIAL_UNBUFFERED = 2,
-	VIPS_OPERATION_NOCACHE = 3
+	VIPS_OPERATION_NOCACHE = 4
 } VipsOperationFlags;
 
 #define VIPS_TYPE_OPERATION (vips_operation_get_type())