diff --git a/Makefile b/Makefile
index bbcb2f4cbe7ccd1d82985a5fead4e6fee13ba757..5c6bc60583f9ab80d31831a07fc545cb9b9fc131 100644
--- a/Makefile
+++ b/Makefile
@@ -254,7 +254,7 @@ source-tree: purge
 
 source: source-tree
 	cd gmsh-${GMSH_VERSION} && rm -rf ${GMSH_VERSION_FILE}\
-          contrib/NR contrib/Tetgen/*.{cxx,h} contrib/misc/variables.i*
+          Common/GmshConfig.h contrib/Tetgen/*.{cxx,h} contrib/misc/variables.i*
 	tar zcf gmsh-${GMSH_VERSION}-source.tgz gmsh-${GMSH_VERSION}
 
 # Rules to package the binaries