1 files changed, 1 insertions, 1 deletions
diff --git a/ext/extmk.rb.in b/ext/extmk.rb.in
index c060d9d9dd..ed6a49fb7c 100644
--- a/ext/extmk.rb.in
+++ b/ext/extmk.rb.in
@@ -385,7 +385,7 @@ def create_makefile(target)
         f.print "EXPORTS\n", "Init_", target, "\n"
       end
     end
-    defflag = "--def=" + target + ".def"
+    defflag = target + ".def"
   end
 
   if RUBY_PLATFORM =~ /mswin32/