diff --git a/make/mkspec.sh b/make/mkspec.sh
index 55eca951..66b40bcd 100644
--- a/make/mkspec.sh
+++ b/make/mkspec.sh
@@ -70,7 +70,7 @@ echo "cat $INSTALL_LOG | sed \"s% \$RPM_BUILD_ROOT% %\" | grep -e  'include\|dev
 #echo "echo $VERSION.$RELEASE >                    \$RPM_BUILD_ROOT/usr/share/doc/packages/ytools/VERSION"
 echo ""
 echo "%post -n $NAME-run"
-echo "/opt/ytools/bin/jcs init"
+echo "if [ "\$TARGET" != mingw ]; then /opt/ytools/bin/jcs init; fi"
 echo ""
 echo "%clean"
 #echo 'rm -rf $RPM_BUILD_ROOT'