diff --git a/src/test/java/jnr/posix/EnvTest.java b/src/test/java/jnr/posix/EnvTest.java
index b6faa5a..47280c1 100644
--- a/src/test/java/jnr/posix/EnvTest.java
+++ b/src/test/java/jnr/posix/EnvTest.java
@@ -39,6 +39,7 @@ public void testSetenvOverwrite() throws Throwable {
 
             assertEquals(0, result);
             assertNotEquals(path, posix.getenv("PATH"));
+            posix.setenv("PATH", path, 1);
         }
     }