diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index c24a1fc8514..ac3af528bc6 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -1134,8 +1134,7 @@ typedef struct IndexOptInfo IndexOptInfo;
 #define HAVE_INDEXOPTINFO_TYPEDEF 1
 #endif
 
-struct IndexPath;				/* avoid including pathnodes.h here */
-struct PlannerInfo;				/* avoid including pathnodes.h here */
+struct IndexPath;				/* forward declaration */
 
 struct IndexOptInfo
 {