diff --git a/unit_tests/src/test_client_connection.cpp b/unit_tests/src/test_client_connection.cpp
index a58a39c5c7..ad47e5e4de 100644
--- a/unit_tests/src/test_client_connection.cpp
+++ b/unit_tests/src/test_client_connection.cpp
@@ -15,6 +15,8 @@
 #include "irods/user_administration.hpp"
 #include "irods/system_error.hpp"
 
+#include <errno.h> // For ECONNREFUSED.
+
 #include <algorithm>
 #include <array>
 #include <string_view>
@@ -332,9 +334,9 @@ TEST_CASE("#7155: report underlying error info from server on failed connection"
             ix::client_connection{env.rodsHost, 8080, {env.rodsUserName, env.rodsZone}};
         }
         catch (const irods::exception& e) {
-            // Extract the iRODS error code, ignoring the embedded errno value.
-            const auto errc = ix::make_error_code(e.code());
-            CHECK(ix::get_irods_error_code(errc) == USER_SOCK_CONNECT_ERR);
+            const auto ec = ix::make_error_code(e.code());
+            CHECK(ix::get_irods_error_code(ec) == USER_SOCK_CONNECT_ERR);
+            CHECK(ix::get_errno(ec) == ECONNREFUSED);
             CHECK_THAT(e.client_display_what(), Catch::Matchers::Contains("_rcConnect: connectToRhost failed"));
         }
     }