diff --git a/src/logging.rs b/src/logging.rs
index 1bdee43..15482f5 100644
--- a/src/logging.rs
+++ b/src/logging.rs
@@ -40,6 +40,7 @@ mod tests {
 
     #[rstest]
     fn err_if_level_not_set() {
+        env::remove_var("RUST_LOG");
         assert!(get_subscriber(false).is_err());
     }
 }