diff --git a/Build/Configurations/Srb2-21slopeszb.cfg b/Build/Configurations/Srb2-21slopeszb.cfg
index 6d7c835..75c35b3 100644
--- a/Build/Configurations/Srb2-21slopeszb.cfg
+++ b/Build/Configurations/Srb2-21slopeszb.cfg
@@ -70,6 +70,9 @@ generalizedlinedefs = false;
 generalizedsectors = true;
 
 // Texture loading options
+defaultwalltexture = "GFZROCK";
+defaultfloortexture = "GFZFLR01";
+defaultceilingtexture = "F_SKY1";
 mixtexturesflats = false;
 defaulttexturescale = 1.0f;
 defaultflatscale = 1.0f;