diff --git a/xlc/org.eclipse.cdt.core.lrparser.xlc/plugin.xml b/xlc/org.eclipse.cdt.core.lrparser.xlc/plugin.xml
index 7438f97c949..ffc0beb0ce4 100644
--- a/xlc/org.eclipse.cdt.core.lrparser.xlc/plugin.xml
+++ b/xlc/org.eclipse.cdt.core.lrparser.xlc/plugin.xml
@@ -36,6 +36,15 @@
             class="org.eclipse.cdt.internal.core.lrparser.xlc.ui.preferences.XlcLanguageOptionsPreferencePage"
             id="org.eclipse.cdt.core.lrparser.xlc.ui.XlcLanguagePropertyPage"
             name="%preferences.page.title">
+         <enabledWhen>
+            <adapt
+                  type="org.eclipse.core.resources.IProject">
+               <test
+                     property="org.eclipse.core.resources.projectNature"
+                     value="org.eclipse.cdt.core.cnature">
+               </test>
+            </adapt>
+         </enabledWhen>
       </page>
    </extension>
 </plugin>