diff --git a/core/org.eclipse.cdt.core/plugin.xml b/core/org.eclipse.cdt.core/plugin.xml
index a27d80570ce..ec68e966950 100644
--- a/core/org.eclipse.cdt.core/plugin.xml
+++ b/core/org.eclipse.cdt.core/plugin.xml
@@ -380,7 +380,7 @@
       </fileTypes>
       <fileTypes
             type="text"
-            extension="cdtproject">
+            extension="cproject">
       </fileTypes>
    </extension>
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