1 files changed, 1 insertions, 1 deletions
diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index 0ff6351d02..c002c8893e 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -934,7 +934,7 @@ static:		$(STATIC_LIB)
     end
   end
 ensure
-  mfile.close
+  mfile.close if mfile
 end
 
 def init_mkmf(config = CONFIG)