diff --git a/lib/Makefile.vc6 b/lib/Makefile.vc6
index e9ddd366e..496d93a1c 100644
--- a/lib/Makefile.vc6
+++ b/lib/Makefile.vc6
@@ -222,6 +222,7 @@ X_OBJS= \
         $(DIROBJ)\http_negotiate.obj \
         $(DIROBJ)\http_ntlm.obj \
 	$(DIROBJ)\md5.obj \
+	$(DIROBJ)\curl_strerror.obj \
 	$(RESOURCE)
 
 all : $(TARGET)