diff --git a/include/benchmark/benchmark.h b/include/benchmark/benchmark.h
index 7dd72e27..dc876768 100644
--- a/include/benchmark/benchmark.h
+++ b/include/benchmark/benchmark.h
@@ -674,7 +674,7 @@ class Counter {
   Counter(double v = 0., Flags f = kDefaults, OneK k = kIs1000)
       : value(v), flags(f), oneK(k) {}
 
-  BENCHMARK_ALWAYS_INLINE operator double const &() const { return value; }
+  BENCHMARK_ALWAYS_INLINE operator double const&() const { return value; }
   BENCHMARK_ALWAYS_INLINE operator double&() { return value; }
 };