diff --git a/src/glsl/glcpp/glcpp-parse.y b/src/glsl/glcpp/glcpp-parse.y
index 451b72841cf..02c6c11dff9 100644
--- a/src/glsl/glcpp/glcpp-parse.y
+++ b/src/glsl/glcpp/glcpp-parse.y
@@ -1272,9 +1272,6 @@ glcpp_parser_create (const struct gl_extensions *extensions, int api)
 	      if (extensions->ARB_sample_shading)
 	         add_builtin_define(parser, "GL_ARB_sample_shading", 1);
 
-	      if (extensions->EXT_shader_integer_mix)
-	         add_builtin_define(parser, "GL_EXT_shader_integer_mix", 1);
-
 	      if (extensions->ARB_texture_gather)
 	         add_builtin_define(parser, "GL_ARB_texture_gather", 1);
 
@@ -1283,6 +1280,11 @@ glcpp_parser_create (const struct gl_extensions *extensions, int api)
 	   }
 	}
 
+	if (extensions != NULL) {
+	   if (extensions->EXT_shader_integer_mix)
+	      add_builtin_define(parser, "GL_EXT_shader_integer_mix", 1);
+	}
+
 	language_version = 110;
 	add_builtin_define(parser, "__VERSION__", language_version);