diff --git a/lib/service/custom_device_builder/src/flutter.dart b/lib/service/custom_device_builder/src/flutter.dart
index 2e1f165..6ce2591 100644
--- a/lib/service/custom_device_builder/src/flutter.dart
+++ b/lib/service/custom_device_builder/src/flutter.dart
@@ -145,9 +145,9 @@ class FlutterCustomDeviceBuilder extends CustomDeviceBuilder {
           'rm -rf "/tmp/\${appName}/build/linux/arm64/debug/bundle/data/flutter_assets/*" ;',
           'rm -rf "/tmp/\${appName}/build/linux/arm64/debug/bundle/data/icudtl.dat" ;',
           // and replace them by host build artifacts
-          'cp /tmp/\${appName}/$hostBuildClonePath/flutter_assets/*  /tmp/\${appName}/build/flutter_assets ;',
-          'cp /tmp/\${appName}/$hostBuildClonePath/flutter_assets/*  /tmp/\${appName}/build/linux/arm64/debug/bundle/data/flutter_assets ;',
-          'cp /tmp/\${appName}/$hostIcuDataClone/icudtl.dat  /tmp/\${appName}/build/linux/arm64/debug/bundle/data ;',
+          'cp -r /tmp/\${appName}/$hostBuildClonePath/flutter_assets/*  /tmp/\${appName}/build/flutter_assets ;',
+          'cp -r /tmp/\${appName}/$hostBuildClonePath/flutter_assets/*  /tmp/\${appName}/build/linux/arm64/debug/bundle/data/flutter_assets ;',
+          'cp -r /tmp/\${appName}/$hostIcuDataClone/icudtl.dat  /tmp/\${appName}/build/linux/arm64/debug/bundle/data ;',
           // finally run the app
           r'DISPLAY=:0 /tmp/\${appName}/build/linux/arm64/debug/bundle/\${appName} ;'
         ],