diff --git a/src/catch2/internal/catch_random_integer_helpers.hpp b/src/catch2/internal/catch_random_integer_helpers.hpp
index 1c450f05..fadc1e15 100644
--- a/src/catch2/internal/catch_random_integer_helpers.hpp
+++ b/src/catch2/internal/catch_random_integer_helpers.hpp
@@ -41,9 +41,8 @@ namespace Catch {
         struct ExtendedMultResult {
             T upper;
             T lower;
-            friend bool operator==( ExtendedMultResult const& lhs,
-                                    ExtendedMultResult const& rhs ) {
-                return lhs.upper == rhs.upper && lhs.lower == rhs.lower;
+            bool operator==( ExtendedMultResult const& rhs ) const {
+                return upper == rhs.upper && lower == rhs.lower;
             }
         };