diff --git a/build.sh b/build.sh
index 6ab1c87945d1ec4303d6ad483a6306df2651706c..b1ba6484afb30bba6ab54206d804a7a22ceaa277 100755
--- a/build.sh
+++ b/build.sh
@@ -135,6 +135,7 @@ print_logo() {
 }
 
 checkPerm() {
+  chmod +x $PRG_DIR/mvnw
   if [ -x "$PRG_DIR/mvnw" ]; then
     return 0
   else