diff --git a/test/helper/libmicrohttpd_mock.cpp b/test/helper/libmicrohttpd_mock.cpp
index ca1d5ca..a892b30 100644
--- a/test/helper/libmicrohttpd_mock.cpp
+++ b/test/helper/libmicrohttpd_mock.cpp
@@ -146,4 +146,14 @@ extern "C"
             : MHD_NO;
     }
 
+    const char * MHD_lookup_connection_value(
+        struct MHD_Connection * connection,
+        enum MHD_ValueKind kind,
+        const char * key)
+    {
+        return libmicrohttpd_mock::instance
+            ? libmicrohttpd_mock::instance->MHD_lookup_connection_value(connection, kind, key)
+            : nullptr;
+    }
+
 }
diff --git a/test/helper/libmicrohttpd_mock.h b/test/helper/libmicrohttpd_mock.h
index 4ede28c..f76731a 100644
--- a/test/helper/libmicrohttpd_mock.h
+++ b/test/helper/libmicrohttpd_mock.h
@@ -95,6 +95,12 @@ public:
              const char * post_data,
              size_t post_data_len));
 
+    MOCK_METHOD3(
+        MHD_lookup_connection_value,
+        const char * (struct MHD_Connection * connection,
+                      enum MHD_ValueKind kind,
+                      const char * key));
+
 public:
     inline libmicrohttpd_mock()
     {