diff --git a/demo1.cpp b/demo1.cpp
index aa3b5c9..c395878 100644
--- a/demo1.cpp
+++ b/demo1.cpp
@@ -1021,7 +1021,6 @@ void draw()
 
   c.maxHits = 8;
   c.maxSteps = 10;
-  c.computeTextureCoords = 1;
 
   render(player.mCamera,floorHeightAt,ceilingHeightAt,textureAt,pixelFunc,c);
 
diff --git a/demo2.cpp b/demo2.cpp
index 39a5c01..275745d 100644
--- a/demo2.cpp
+++ b/demo2.cpp
@@ -25,7 +25,7 @@
        be seen at less shaky head bobbing when moving. However the latter
        algorithm doesn't support rolling doors (these will be turned off). */
 
-//#define NO_TEXTURES
+#define NO_TEXTURES
   /* ^ Turns off textures and only uses colors, which increases FPS. */
 
 //#define USE_DIST_APPROX 1 
@@ -43,6 +43,10 @@
   /* ^ Defines how the door roll: -1 opens the door to the left, 1 to the
        right, 0 to both. */
 
+#ifdef NO_TEXTURES
+#define COMPUTE_WALL_TEXCOORDS 0
+#endif
+
 #define FPS 60
 #define HEAD_BOB_HEIGHT 200
 #define HEAD_BOB_STEP 20
@@ -966,7 +970,6 @@ void draw()
 
   c.maxHits = 1;
   c.maxSteps = 20;
-  c.computeTextureCoords = 1;
 
   player.mCamera.height += player.mHeadBob;
 
diff --git a/demo3.cpp b/demo3.cpp
index 94b805a..19050f0 100644
--- a/demo3.cpp
+++ b/demo3.cpp
@@ -19,6 +19,8 @@
 #define HEAD_BOB_HEIGHT 150
 #define HEAD_BOB_STEP 20
 
+#define COMPUTE_WALL_TEXCOORDS 0 // we won't be using textures, so turn them off
+
 #include "general.hpp"
 
 #define LEVEL_X_RES 29
@@ -500,7 +502,6 @@ void draw()
 
   c.maxHits = 6;
   c.maxSteps = 20;
-  c.computeTextureCoords = 0;
 
   player.mCamera.height += player.mHeadBob;
   render(player.mCamera,floorHeightAt,0,colorAt,pixelFunc,c);