diff --git a/crates/cuddle-clusters/src/catalog.rs b/crates/cuddle-clusters/src/catalog.rs
index 3eca9d5..5a94131 100644
--- a/crates/cuddle-clusters/src/catalog.rs
+++ b/crates/cuddle-clusters/src/catalog.rs
@@ -90,7 +90,7 @@ pub mod crdb_database {
                 })
             {
                 return Some(Ok((
-                    format!("{}.yaml", self.name().replace("/", "_")),
+                    format!("{}.yaml", self.name().replace("/", "-")),
                     r#"
 apiVersion: v1
 kind: ConfigMap