1 files changed, 5 insertions, 1 deletions

diff --git a/src/Blocks/BlockSideways.h b/src/Blocks/BlockSideways.h
index 4b1e38d6d..e52fbaa2f 100644
--- a/src/Blocks/BlockSideways.h
+++ b/src/Blocks/BlockSideways.h
@@ -58,12 +58,16 @@ public:
 				return a_Meta | 0x4;  // East or west
 			}
 
-			default:
+			case BLOCK_FACE_NONE:
 			{
 				ASSERT(!"Unhandled block face!");
 				return a_Meta | 0xC;  // No idea, give a special meta
 			}
 		}
+		#if !defined(__clang__)
+			ASSERT(!"Unknown BLOCK_FACE");
+			return 0;
+		#endif
 	}
 } ;