diff --git a/ttconv/pprdrv_tt2.cpp b/ttconv/pprdrv_tt2.cpp
index 61e2dd968835..f8c8cef66fdb 100644
--- a/ttconv/pprdrv_tt2.cpp
+++ b/ttconv/pprdrv_tt2.cpp
@@ -33,8 +33,8 @@
 */
 
 #include "global_defines.h"
-#include <cmath>
 #include <cstdlib>
+#include <cmath>
 #include <cstring>
 #include <memory>
 #include "pprdrv.h"