diff --git a/src/BlockInfo.cpp b/src/BlockInfo.cpp
index 4981b2efe..c4ee0b525 100644
--- a/src/BlockInfo.cpp
+++ b/src/BlockInfo.cpp
@@ -1003,9 +1003,6 @@ bool cBlockInfo::IsTransparent(const BLOCKTYPE Block)
 		case E_BLOCK_DAYLIGHT_SENSOR:
 		case E_BLOCK_DEAD_BUSH:
 		case E_BLOCK_DETECTOR_RAIL:
-		case E_BLOCK_DOUBLE_RED_SANDSTONE_SLAB:
-		case E_BLOCK_DOUBLE_STONE_SLAB:
-		case E_BLOCK_DOUBLE_WOODEN_SLAB:
 		case E_BLOCK_DRAGON_EGG:
 		case E_BLOCK_ENCHANTMENT_TABLE:
 		case E_BLOCK_END_PORTAL:
@@ -1066,7 +1063,6 @@ bool cBlockInfo::IsTransparent(const BLOCKTYPE Block)
 		case E_BLOCK_POWERED_RAIL:
 		case E_BLOCK_PUMPKIN_STEM:
 		case E_BLOCK_PURPLE_SHULKER_BOX:
-		case E_BLOCK_PURPUR_DOUBLE_SLAB:
 		case E_BLOCK_PURPUR_SLAB:
 		case E_BLOCK_PURPUR_STAIRS:
 		case E_BLOCK_QUARTZ_STAIRS: