diff --git a/tests/dl_test.cpp b/tests/dl_test.cpp
index 18ba011..57d04e9 100644
--- a/tests/dl_test.cpp
+++ b/tests/dl_test.cpp
@@ -104,6 +104,7 @@
   std::string expected_output =
       "ctor: argc=1 argv[0]=" + helper + "\n" +
       "main: argc=1 argv[0]=" + helper + "\n" +
+      "__progname=" + helper + "\n" +
       "helper_func called\n";
   ExecTestHelper eth;
   eth.SetArgs({ kPathToLinker, helper.c_str(), nullptr });
@@ -118,6 +119,7 @@
   std::string expected_output =
       "ctor: argc=1 argv[0]=" + helper + "\n" +
       "main: argc=1 argv[0]=" + helper + "\n" +
+      "__progname=" + helper + "\n" +
       "helper_func called\n";
   ExecTestHelper eth;
   eth.SetArgs({ kPathToLinker, helper.c_str(), nullptr });