diff --git a/Python/pystrtod.c b/Python/pystrtod.c
index 83e792d..db4cad1 100644
--- a/Python/pystrtod.c
+++ b/Python/pystrtod.c
@@ -101,7 +101,7 @@
 		char *copy, *c;
 
 		/* We need to convert the '.' to the locale specific decimal point */
-		copy = malloc(end - nptr + 1 + decimal_point_len);
+		copy = (char *)malloc(end - nptr + 1 + decimal_point_len);
 
 		c = copy;
 		memcpy(c, nptr, decimal_point_pos - nptr);