diff --git a/src/backend/access/brin/brin_minmax.c b/src/backend/access/brin/brin_minmax.c
index d9fa9cd5976..d64c4f08644 100644
--- a/src/backend/access/brin/brin_minmax.c
+++ b/src/backend/access/brin/brin_minmax.c
@@ -303,7 +303,7 @@ brin_minmax_union(PG_FUNCTION_ARGS)
 /*
  * Cache and return the procedure for the given strategy.
  */
-FmgrInfo *
+static FmgrInfo *
 minmax_get_strategy_procinfo(BrinDesc *bdesc, uint16 attno, Oid subtype,
 							 uint16 strategynum)
 {