diff --git a/src/gl/scene/gl_walls.cpp b/src/gl/scene/gl_walls.cpp
index 231503407..5d13a0720 100644
--- a/src/gl/scene/gl_walls.cpp
+++ b/src/gl/scene/gl_walls.cpp
@@ -1503,7 +1503,7 @@ void GLWall::Process(seg_t *seg, sector_t * frontsector, sector_t * backsector)
 				if (gltexture)
 				{
 					DoTexture(RENDERWALL_TOP, seg, (seg->linedef->flags & (ML_DONTPEGTOP)) == 0,
-						frefz, realback->GetPlaneTexZF(sector_t::ceiling),
+						crefz, realback->GetPlaneTexZF(sector_t::ceiling),
 						fch1, fch2, bch1a, bch2a, 0);
 				}
 				else if (!(seg->sidedef->Flags & WALLF_POLYOBJ))
@@ -1516,7 +1516,7 @@ void GLWall::Process(seg_t *seg, sector_t * frontsector, sector_t * backsector)
 						if (gltexture)
 						{
 							DoTexture(RENDERWALL_TOP, seg, (seg->linedef->flags & (ML_DONTPEGTOP)) == 0,
-								frefz, realback->GetPlaneTexZF(sector_t::ceiling),
+								crefz, realback->GetPlaneTexZF(sector_t::ceiling),
 								fch1, fch2, bch1a, bch2a, 0);
 						}
 					}
diff --git a/src/gl/textures/gl_material.cpp b/src/gl/textures/gl_material.cpp
index 60a53fda3..f5c8f90b3 100644
--- a/src/gl/textures/gl_material.cpp
+++ b/src/gl/textures/gl_material.cpp
@@ -372,7 +372,7 @@ float FTexCoordInfo::TextureAdjustWidth() const
 	if (mWorldPanning) 
 	{
 		if (mTempScale.X == 1.f) return mRenderWidth;
-		else return mWidth * mTempScale.X;
+		else return mWidth / mTempScale.X;
 	}
 	else return mWidth;
 }