diff --git a/src/backend/partitioning/partprune.c b/src/backend/partitioning/partprune.c
index f954b92a6b1..eae690e2ca3 100644
--- a/src/backend/partitioning/partprune.c
+++ b/src/backend/partitioning/partprune.c
@@ -2954,10 +2954,6 @@ perform_pruning_combine_step(PartitionPruneContext *context,
 				}
 			}
 			break;
-
-		default:
-			elog(ERROR, "invalid pruning combine op: %d",
-				 (int) cstep->combineOp);
 	}
 
 	return result;