Index: source/blender/editors/screen/glutil.c
===================================================================
--- source/blender/editors/screen/glutil.c	(revision 55142)
+++ source/blender/editors/screen/glutil.c	(working copy)
@@ -560,10 +560,10 @@
 			glEnable(GL_TEXTURE_2D);
 			glBegin(GL_QUADS);
 			glTexCoord2f((float)(0 + offset_left) / tex_w, (float)(0 + offset_bot) / tex_h);
-			glVertex2f(rast_x + (float)offset_left * xzoom, rast_y + (float)offset_bot * xzoom);
+			glVertex2f(rast_x + (float)offset_left * xzoom, rast_y + (float)offset_bot * yzoom);
 
 			glTexCoord2f((float)(subpart_w - offset_right) / tex_w, (float)(0 + offset_bot) / tex_h);
-			glVertex2f(rast_x + (float)(subpart_w - offset_right) * xzoom * scaleX, rast_y + (float)offset_bot * xzoom);
+			glVertex2f(rast_x + (float)(subpart_w - offset_right) * xzoom * scaleX, rast_y + (float)offset_bot * yzoom);
 
 			glTexCoord2f((float)(subpart_w - offset_right) / tex_w, (float)(subpart_h - offset_top) / tex_h);
 			glVertex2f(rast_x + (float)(subpart_w - offset_right) * xzoom * scaleX, rast_y + (float)(subpart_h - offset_top) * yzoom * scaleY);