diff --git a/Effects/model-default.eff b/Effects/model-default.eff
index 08366e17b..6fe714462 100644
--- a/Effects/model-default.eff
+++ b/Effects/model-default.eff
@@ -148,7 +148,6 @@
 					<extension-supported>GL_ARB_fragment_shader</extension-supported>
 				</and>
 			</or>
-			<extension-supported>GL_EXT_gpu_shader4</extension-supported>
 		</and>
 	</predicate>
 	<pass>
diff --git a/Effects/terrain-default.eff b/Effects/terrain-default.eff
index f550dcedf..28a190d22 100644
--- a/Effects/terrain-default.eff
+++ b/Effects/terrain-default.eff
@@ -211,7 +211,6 @@
 					<extension-supported>GL_ARB_fragment_shader</extension-supported>
 				</and>
 			</or>
-			<extension-supported>GL_EXT_gpu_shader4</extension-supported>
 		</and>
 	</predicate>
 	<pass>