diff --git a/Tests/RunCMake/GenerateExportHeader/exportheader_test.cpp b/Tests/RunCMake/GenerateExportHeader/exportheader_test.cpp
index ed8c35e19d..2cfcd8deaf 100644
--- a/Tests/RunCMake/GenerateExportHeader/exportheader_test.cpp
+++ b/Tests/RunCMake/GenerateExportHeader/exportheader_test.cpp
@@ -10,7 +10,7 @@
 
 static void rtrim(std::string& str, char byte)
 {
-  const std::size_t size = str.size();
+  size_t const size = str.size();
   if (size && str[size - 1] == byte) {
     str.resize(size - 1);
   }