--- a/src/select/computed.c
+++ b/src/select/computed.c
@@ -73,7 +73,7 @@
 	if (result == NULL)
 		return CSS_BADPARM;
 
-	s = calloc(sizeof(css_computed_style), 1);
+	s = calloc(1, sizeof(css_computed_style));
 	if (s == NULL)
 		return CSS_NOMEM;