diff --git a/src/universal/bin/sbt b/src/universal/bin/sbt
index d622f98ef..8ada3d5f4 100755
--- a/src/universal/bin/sbt
+++ b/src/universal/bin/sbt
@@ -38,6 +38,7 @@ is_cygwin() {
   case "$os" in
     CYGWIN*) return 0 ;;
     MINGW*) return 0 ;;
+    MSYS*) return 0 ;;
     *)  return 1 ;;
   esac
 }