diff --git a/src/plugins/aws/ssm/index.ts b/src/plugins/aws/ssm/index.ts
index fdb677a..aa69ae2 100644
--- a/src/plugins/aws/ssm/index.ts
+++ b/src/plugins/aws/ssm/index.ts
@@ -184,7 +184,7 @@ const commandParameter = (args: SshCommandArgs) =>
           (argument) =>
             // escape all double quotes (") in commands such as `p0 ssh <instance>> echo 'hello; "world"'` because we
             // need to encapsulate command arguments in double quotes as we pass them along to the remote shell
-            `"${argument.replace(/"/g, '\\"')}"`
+            `"${String(argument).replace(/"/g, '\\"')}"`
         )
         .join(" ")}`.trim()
     : undefined;