diff --git a/slo_generator/cli.py b/slo_generator/cli.py
index aa678bad..f029b236 100644
--- a/slo_generator/cli.py
+++ b/slo_generator/cli.py
@@ -156,6 +156,7 @@ def compute(slo_config, config, export, delete, timestamp):
     "--target",
     envvar="GOOGLE_FUNCTION_TARGET",
     default="run_compute",
+    type=click.Choice(["run_compute", "run_export"]),
     help="Target function name",
 )
 @click.option(