diff --git a/lib/ex_aws/credentials_ini/file.ex b/lib/ex_aws/credentials_ini/file.ex
index 9defe235..41f1f3b1 100644
--- a/lib/ex_aws/credentials_ini/file.ex
+++ b/lib/ex_aws/credentials_ini/file.ex
@@ -227,6 +227,8 @@ if Code.ensure_loaded?(ConfigParser) do
     end
 
     def parse_ini_file({:ok, contents}, profile_name) do
+      composite_key = "profile " <> profile_name
+
       contents
       |> ConfigParser.parse_string()
       |> case do
@@ -234,7 +236,7 @@ if Code.ensure_loaded?(ConfigParser) do
           merge_special_keys(full, config)
           |> strip_key_prefix()
 
-        {:ok, %{("profile " <> ^profile_name) => config} = full} ->
+        {:ok, %{^composite_key => config} = full} ->
           merge_special_keys(full, config)
           |> strip_key_prefix()