diff --git a/quickjs.h b/quickjs.h
index 7d741dea8..bbfc1c0e0 100644
--- a/quickjs.h
+++ b/quickjs.h
@@ -30,6 +30,7 @@
 #include <stdio.h>
 #include <stdint.h>
 #include <string.h>
+#include <math.h>
 
 #ifdef __cplusplus
 extern "C" {