diff --git a/binaries/benchmark_helper.h b/binaries/benchmark_helper.h
index 8c24a3d9439027..d09ba4e9c55946 100644
--- a/binaries/benchmark_helper.h
+++ b/binaries/benchmark_helper.h
@@ -82,7 +82,9 @@ void writeTextOutput(
   }
   // remove the last ,
   string str = line.str();
-  str.pop_back();
+  if(str.length() != 0) {
+    str.pop_back();
+  }
   lines.push_back(str);
 
   // static casts are workaround for MSVC build