diff --git a/echo.sh b/echo.sh
index c97ce729..0f6cf2d7 100755
--- a/echo.sh
+++ b/echo.sh
@@ -1,2 +1,2 @@
 #!/bin/sh
-exec dune exec "examples/echo.exe" -- $@
+exec dune exec --profile=release "examples/echo.exe" -- $@