diff --git a/oldloader.c b/oldloader.c
index efb45549d9..644d76be85 100644
--- a/oldloader.c
+++ b/oldloader.c
@@ -213,6 +213,7 @@ static bool LoadChunk(LoadgameState *ls, void *base, const OldChunks *chunks)
 					case OC_ASSERT:
 						DEBUG(oldloader, 4)("[OldLoader] Assert point: %x / %x", ls->total_read, chunk->offset + _bump_assert_value);
 						if (ls->total_read != chunk->offset + _bump_assert_value) ls->failed = true;
+					default: break;
 				}
 			} else {
 				uint32 res = 0;