diff --git a/languages/cpp/templates/result-instantiation/tuple.cpp b/languages/cpp/templates/result-instantiation/tuple.cpp
index c94a7054..9ba6f3af 100644
--- a/languages/cpp/templates/result-instantiation/tuple.cpp
+++ b/languages/cpp/templates/result-instantiation/tuple.cpp
@@ -1,2 +1,5 @@
-            ${property}.first = jsonResult.Get(0);
-            ${property}.second = jsonResult.Get(1);
\ No newline at end of file
+            ASSERT((jsonResult.Length() == 0) || (jsonResult.Length() == 2));
+            if (jsonResult.Length() == 2) {
+                ${property}.first = jsonResult.Get(0);
+                ${property}.second = jsonResult.Get(1);
+	    }