diff --git a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/EFSExtensionProvider.java b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/EFSExtensionProvider.java
index 3c70e1db98a..3889556adc3 100644
--- a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/EFSExtensionProvider.java
+++ b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/EFSExtensionProvider.java
@@ -13,6 +13,7 @@ package org.eclipse.cdt.core;
 import java.net.URI;
 import java.net.URISyntaxException;
 
+import org.eclipse.core.filesystem.EFS;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.core.runtime.URIUtil;
@@ -56,9 +57,12 @@ public abstract class EFSExtensionProvider {
 	 */
 	public String getPathFromURI(URI locationURI) {
 		String path = locationURI.getPath();
-		// URI path on Windows is represented as "/C:/path"
-		if (path != null && Platform.getOS().equals(Platform.WS_WIN32) && path.matches("/[A-Za-z]:.*")) { //$NON-NLS-1$
-			path = path.substring(1);
+		String schema = locationURI.getScheme();
+		if (schema != null && schema.equals(EFS.SCHEME_FILE) && Platform.getOS().equals(Platform.WS_WIN32)) {
+			// URI path on Windows is represented as "/C:/path"
+			if (path != null && path.matches("/[A-Za-z]:.*")) { //$NON-NLS-1$
+				path = path.substring(1);
+			}
 		}
 		return path;
 	}