diff --git a/dev/app.go b/dev/app.go
index 955ddc6..49454e6 100644
--- a/dev/app.go
+++ b/dev/app.go
@@ -261,10 +261,10 @@ if test -e .pumaenv && [ "$PUMADEV_SOURCE_PUMAENV" != "0" ]; then
 fi
 
 if test -e Gemfile && bundle exec puma -V &>/dev/null; then
-	exec bundle exec puma -C $CONFIG --tag puma-dev:%s -w $WORKERS -t 0:$THREADS -b unix:%s
+	exec bundle exec $COMMAND_PREFIX puma -C $CONFIG --tag puma-dev:%s -w $WORKERS -t 0:$THREADS -b unix:%s
 fi
 
-exec puma -C $CONFIG --tag puma-dev:%s -w $WORKERS -t 0:$THREADS -b unix:%s'
+exec $COMMAND_PREFIX puma -C $CONFIG --tag puma-dev:%s -w $WORKERS -t 0:$THREADS -b unix:%s'
 `
 
 func (pool *AppPool) LaunchApp(name, dir string) (*App, error) {