diff --git a/build-appimage-in-container.sh b/build-appimage-in-container.sh
index 5c796f6..18c7550 100755
--- a/build-appimage-in-container.sh
+++ b/build-appimage-in-container.sh
@@ -6,7 +6,8 @@ cp -a vol/oxce/. AppDir/.
 rm AppDir/OpenXcomEx
 
 mkdir -p AppDir/usr/bin \
-  && cp vol/oxce/OpenXcomEx AppDir/usr/bin/
+  && cp vol/oxce/OpenXcomEx AppDir/usr/bin/ \
+  && chmod +x AppDir/usr/bin/OpenXcomEx
 
 /usr/bin/linuxdeploy --appdir AppDir --output appimage
 mv *.AppImage out/