diff --git a/code/renderer/tr_shader.c b/code/renderer/tr_shader.c
index 4297ff7..ba0fe2e 100644
--- a/code/renderer/tr_shader.c
+++ b/code/renderer/tr_shader.c
@@ -2835,6 +2835,10 @@ static int CollapseGLSL( void ) {
 		       "#extension GL_EXT_gpu_shader4 : enable\n");
 		FSText("#extension GL_EXT_geometry_shader4 : enable\n"
 		       "#extension GL_EXT_gpu_shader4 : enable\n");
+	} else if ( shader.lightmapIndex == LIGHTMAP_MD3 &&
+		    qglTexBufferEXT ) {
+		VSText("#extension GL_EXT_gpu_shader4 : enable\n");
+		FSText("#extension GL_EXT_gpu_shader4 : enable\n");
 	}
 
 	FSText("const vec3 constants = vec3( 0.0, 1.0, ");