diff --git a/migra-cli/src/config.rs b/migra-cli/src/config.rs
index 20ed933..fc7633a 100644
--- a/migra-cli/src/config.rs
+++ b/migra-cli/src/config.rs
@@ -80,12 +80,13 @@ fn recursive_find_project_root() -> MigraResult<PathBuf> {
 impl Config {
     pub fn read(config_path: Option<PathBuf>) -> MigraResult<Config> {
         let config_path = match config_path {
-            Some(mut config_path) if config_path.is_dir() => {
-                config_path.push(MIGRA_TOML_FILENAME);
-                Some(config_path)
+            Some(config_path) if config_path.is_dir() => {
+                Some(config_path.join(MIGRA_TOML_FILENAME))
             }
             Some(config_path) => Some(config_path),
-            None => recursive_find_project_root().ok(),
+            None => recursive_find_project_root()
+                .map(|path| path.join(MIGRA_TOML_FILENAME))
+                .ok(),
         };
 
         match config_path {