diff --git a/tests/counting_allocator.cpp b/tests/counting_allocator.cpp
index 6a7bdfbfc..4a2a76a36 100644
--- a/tests/counting_allocator.cpp
+++ b/tests/counting_allocator.cpp
@@ -32,7 +32,7 @@ struct TestClass
 {
   int value[1024];
 
-  TestClass(int val) : value(val)
+  TestClass(int val) : value{val}
   {
   }
 };