diff --git a/wadsrc/static/shaders/glsl/main.fp b/wadsrc/static/shaders/glsl/main.fp
index a46a09beac..15af579a90 100644
--- a/wadsrc/static/shaders/glsl/main.fp
+++ b/wadsrc/static/shaders/glsl/main.fp
@@ -5,8 +5,8 @@ layout(location = 1) in vec4 vColor;
 layout(location = 2) in vec4 pixelpos;
 layout(location = 3) in vec3 glowdist;
 layout(location = 4) in vec3 gradientdist;
-layout(location = 5) in vec4 vWorldNormalOrig;
-layout(location = 6) in vec4 vEyeNormalOrig;
+layout(location = 5) in vec4 vWorldNormal;
+layout(location = 6) in vec4 vEyeNormal;
 layout(location = 9) in vec3 vLightmap;
 
 #ifdef NO_CLIPDISTANCE_SUPPORT
@@ -20,9 +20,6 @@ layout(location=1) out vec4 FragFog;
 layout(location=2) out vec4 FragNormal;
 #endif
 
-vec4 vWorldNormal;
-vec4 vEyeNormal;
-
 struct Material
 {
 	vec4 Base;
@@ -723,15 +720,6 @@ void main()
 	if (ClipDistanceA.x < 0 || ClipDistanceA.y < 0 || ClipDistanceA.z < 0 || ClipDistanceA.w < 0 || ClipDistanceB.x < 0) discard;
 #endif
 
-	// Flip normal if it is facing away from the camera
-	vWorldNormal = vWorldNormalOrig;
-	vEyeNormal = vEyeNormalOrig;
-	if (dot(uCameraPos.xyz - pixelpos.xyz, vWorldNormal.xyz) < 0)
-	{
-		vWorldNormal.xyz = -vWorldNormal.xyz;
-		vEyeNormal.xyz = -vEyeNormal.xyz;
-	}
-
 #ifndef LEGACY_USER_SHADER
 	Material material;