diff --git a/textures.py b/textures.py
index 2713761..e126c9e 100644
--- a/textures.py
+++ b/textures.py
@@ -1724,8 +1724,8 @@ def convert_data(blockID, data, north_direction):
     if blockID == 96: # trapdoor
         #Masked to not clobber opened/closed info
         if north_direction == 'upper-left':
-            if (data & 0b0011) == 0: data = data & 0b1100 | 2
-            elif (data & 0b0011) == 1: data = data & 0b1100 | 3
+            if (data & 0b0011) == 0: data = data & 0b1100 | 3
+            elif (data & 0b0011) == 1: data = data & 0b1100 | 2
             elif (data & 0b0011) == 2: data = data & 0b1100 | 0
             elif (data & 0b0011) == 3: data = data & 0b1100 | 1
         elif north_direction == 'upper-right':
@@ -1734,8 +1734,8 @@ def convert_data(blockID, data, north_direction):
             elif (data & 0b0011) == 2: data = data & 0b1100 | 3
             elif (data & 0b0011) == 3: data = data & 0b1100 | 2
         elif north_direction == 'lower-right':
-            if (data & 0b0011) == 0: data = data & 0b1100 | 3
-            elif (data & 0b0011) == 1: data = data & 0b1100 | 2
+            if (data & 0b0011) == 0: data = data & 0b1100 | 2
+            elif (data & 0b0011) == 1: data = data & 0b1100 | 3
             elif (data & 0b0011) == 2: data = data & 0b1100 | 1
             elif (data & 0b0011) == 3: data = data & 0b1100 | 0