diff --git a/.cspell.json b/.cspell.json
index 21f9c4ab..b071e186 100644
--- a/.cspell.json
+++ b/.cspell.json
@@ -55,6 +55,7 @@
     "tfvars",
     "tmpfs",
     "tonumber",
+    "trimprefix",
     "trivy",
     "userns",
     "xanzy",
diff --git a/main.tf b/main.tf
index 601ef0e2..f6b9c9f1 100644
--- a/main.tf
+++ b/main.tf
@@ -615,14 +615,14 @@ data "aws_iam_policy_document" "ssm" {
           var.runner_gitlab.preregistered_runner_token_ssm_parameter_name,
           aws_ssm_parameter.runner_registration_token.name
         ]
-      ) : "arn:${data.aws_partition.current.partition}:ssm:${data.aws_region.current.name}:${data.aws_caller_identity.current.account_id}:parameter/${name}"
+      ) : "arn:${data.aws_partition.current.partition}:ssm:${data.aws_region.current.name}:${data.aws_caller_identity.current.account_id}:parameter/${trimprefix(name, "/")}"
     ]
   }
 
   statement {
     actions = ["ssm:PutParameter"]
     resources = [
-      "arn:${data.aws_partition.current.partition}:ssm:${data.aws_region.current.name}:${data.aws_caller_identity.current.account_id}:parameter/${aws_ssm_parameter.runner_registration_token.name}"
+      "arn:${data.aws_partition.current.partition}:ssm:${data.aws_region.current.name}:${data.aws_caller_identity.current.account_id}:parameter/${trimprefix(aws_ssm_parameter.runner_registration_token.name, "/")}"
     ]
   }
 }