diff --git a/contrib/amcheck/verify_gin.c b/contrib/amcheck/verify_gin.c
index c615d950736..0455ea2a2c1 100644
--- a/contrib/amcheck/verify_gin.c
+++ b/contrib/amcheck/verify_gin.c
@@ -638,6 +638,9 @@ gin_check_parent_keys_consistency(Relation rel,
 				pfree(ipd);
 			}
 
+			if (prev_tuple)
+				pfree(prev_tuple);
+
 			prev_tuple = CopyIndexTuple(idxtuple);
 			prev_attnum = current_attnum;
 		}