1diff --git a/third_party/agg23/agg_basics.h b/third_party/agg23/agg_basics.h 2index eb6f35686..e7583e308 100644 3--- a/third_party/agg23/agg_basics.h 4+++ b/third_party/agg23/agg_basics.h 5@@ -41,6 +41,7 @@ 6 #endif 7 #define AGG_INLINE inline 8 9+#include <math.h> 10 #include "core/fxcrt/fx_system.h" 11 12 namespace pdfium 13