diff --git a/scripts/macOS/internal/2a_appbundle.sh b/scripts/macOS/internal/2a_appbundle.sh
index 30d0e49f1..cdaa66288 100644
--- a/scripts/macOS/internal/2a_appbundle.sh
+++ b/scripts/macOS/internal/2a_appbundle.sh
@@ -35,8 +35,16 @@ do
     ARGUMENTS="${ARGUMENTS} -executable=${plugin}"
 done
 
+QT_BASE_DIR=""
+
+# if QT_DIR is not empty
+if [ -n "$QT_DIR" ]; then
+    # set QT_BASE_DIR to the path of QT_DIR/bin
+    QT_BASE_DIR="${QT_DIR}/bin/"
+fi
+
 # save in message the output of macdeployqt
-message=$(${QT_DIR}/bin/macdeployqt $INSTALL_PATH/$APPNAME \
+message=$(${QT_BASE_DIR}macdeployqt $INSTALL_PATH/$APPNAME \
     $ARGUMENTS 2>&1)
 
 # if message contains "ERROR" then macdeployqt failed