diff --git a/src/backend/utils/cache/relcache.c b/src/backend/utils/cache/relcache.c
index 2a443036305..62b745b2ade 100644
--- a/src/backend/utils/cache/relcache.c
+++ b/src/backend/utils/cache/relcache.c
@@ -2751,7 +2751,7 @@ RelationCacheInitialize(void)
 								  &ctl, HASH_ELEM | HASH_FUNCTION);
 
 	/*
-	 * relation mapper needs initialized too
+	 * relation mapper needs to be initialized too
 	 */
 	RelationMapInitialize();
 }