diff --git a/engine/gl/r_bishaders.h b/engine/gl/r_bishaders.h
index 5690411c..89ff9d76 100644
--- a/engine/gl/r_bishaders.h
+++ b/engine/gl/r_bishaders.h
@@ -601,10 +601,10 @@ YOU SHOULD NOT EDIT THIS FILE BY HAND
 "vec4 lightmaps;\n"
 "#ifdef DELUXE\n"
 "vec3 norm = texture2D(s_t2, tc).rgb;\n"
-"lightmaps  = texture2D(s_t1, lm ) * e_lmscale[0] * dot(norm, texture2D(s_t3, lm ));\n"
-"lightmaps += texture2D(s_t5, lm2) * e_lmscale[1] * dot(norm, texture2D(s_t8, lm2));\n"
-"lightmaps += texture2D(s_t6, lm3) * e_lmscale[2] * dot(norm, texture2D(s_t9, lm3));\n"
-"lightmaps += texture2D(s_t7, lm4) * e_lmscale[3] * dot(norm, texture2D(s_t10,lm4));\n"
+"lightmaps  = texture2D(s_t1, lm ) * e_lmscale[0] * dot(norm, texture2D(s_t3, lm ).rgb);\n"
+"lightmaps += texture2D(s_t5, lm2) * e_lmscale[1] * dot(norm, texture2D(s_t8, lm2).rgb);\n"
+"lightmaps += texture2D(s_t6, lm3) * e_lmscale[2] * dot(norm, texture2D(s_t9, lm3).rgb);\n"
+"lightmaps += texture2D(s_t7, lm4) * e_lmscale[3] * dot(norm, texture2D(s_t10,lm4).rgb);\n"
 "#else\n"
 "lightmaps  = texture2D(s_t1, lm ) * e_lmscale[0];\n"
 "lightmaps += texture2D(s_t5, lm2) * e_lmscale[1];\n"