diff --git a/mozilla/configure b/mozilla/configure
index 88a3aea2374..4c748b2d4d1 100755
--- a/mozilla/configure
+++ b/mozilla/configure
@@ -7638,6 +7638,7 @@ xpcom/libxpt/Makefile
 xpcom/libxpt/public/Makefile
 xpcom/libxpt/src/Makefile
 xpcom/libxpt/tests/Makefile
+xpcom/libxpt/tools/Makefile
 silentdl/Makefile
 xpfe/Makefile
 xpfe/browser/Makefile