diff --git a/src/backend/catalog/pg_aggregate.c b/src/backend/catalog/pg_aggregate.c
index 959d3845df..ada6e6171b 100644
--- a/src/backend/catalog/pg_aggregate.c
+++ b/src/backend/catalog/pg_aggregate.c
@@ -433,7 +433,7 @@ AggregateCreate(const char *aggName,
 		if (aggTransType == INTERNALOID && func_strict(combinefn))
 			ereport(ERROR,
 					(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
-					 errmsg("combine function with \"%s\" transition type must not be declared STRICT",
+					 errmsg("combine function with transition type %s must not be declared STRICT",
 							format_type_be(aggTransType))));
 
 	}
-- 
2.11.0