diff --git a/test_suite/tests/compile_tests.rs b/test_suite/tests/compile_tests.rs
index 62b826f8..daede763 100644
--- a/test_suite/tests/compile_tests.rs
+++ b/test_suite/tests/compile_tests.rs
@@ -1,20 +1,16 @@
 extern crate compiletest_rs as compiletest;
 
-use std::path::PathBuf;
-use std::env::var;
+use std::env;
 
 fn run_mode(mode: &'static str) {
     let mut config = compiletest::default_config();
 
-    let cfg_mode = mode.parse().expect("Invalid mode");
-
+    config.mode = mode.parse().expect("invalid mode");
     config.target_rustcflags = Some("-L target/debug/ -L target/debug/deps/".to_owned());
-    if let Ok(name) = var::<&str>("TESTNAME") {
-        let s : String = name.to_owned();
-        config.filter = Some(s)
+    if let Ok(name) = env::var("TESTNAME") {
+        config.filter = Some(name);
     }
-    config.mode = cfg_mode;
-    config.src_base = PathBuf::from(format!("tests/{}", mode));
+    config.src_base = format!("tests/{}", mode).into();
 
     compiletest::run_tests(&config);
 }