diff --git a/Makefile.cvs b/Makefile.cvs
index b59434a..cd1316f 100644
--- a/seam/sources/Makefile.cvs
+++ b/seam/sources/Makefile.cvs
@@ -32,7 +32,7 @@ autotools:
 	aclocal -I .
 	autoconf
 	automake --add-missing
-	cd libltdl; aclocal; autoconf; automake --add-missing
+	cd libltdl; chmod +w *; aclocal; autoconf; automake --add-missing
 
 lightning:
 	rm -rf lightning