diff --git a/ciphers/elliptic_curve_key_exchange.cpp b/ciphers/elliptic_curve_key_exchange.cpp
index a13450dbe..a4282a024 100644
--- a/ciphers/elliptic_curve_key_exchange.cpp
+++ b/ciphers/elliptic_curve_key_exchange.cpp
@@ -286,6 +286,7 @@ static void test() {
     std::cout << alice_shared_key << std::endl;
     std::cout << bob_shared_key << std::endl;
 
+    // Check whether shared keys are equal
     assert(alice_shared_key == bob_shared_key);
 }