diff --git a/src/eval.c b/src/eval.c
index e22a61d..6ce7bef 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -992,20 +992,20 @@
     char_u	*value;
     int		value_len;
 {
-    size_t	len;
+    int		len;
 
     if (redir_lval == NULL)
 	return;
 
     if (value_len == -1)
-	len = STRLEN(value);	/* Append the entire string */
+	len = (int)STRLEN(value);	/* Append the entire string */
     else
-	len = value_len;	/* Append only "value_len" characters */
+	len = value_len;		/* Append only "value_len" characters */
 
-    if (ga_grow(&redir_ga, (int)len) == OK)
+    if (ga_grow(&redir_ga, len) == OK)
     {
 	mch_memmove((char *)redir_ga.ga_data + redir_ga.ga_len, value, len);
-	redir_ga.ga_len += (int)len;
+	redir_ga.ga_len += len;
     }
     else
 	var_redir_stop();