diff --git a/src/editline.c b/src/editline.c
index 2e1fc5c..140ad8e 100644
--- a/src/editline.c
+++ b/src/editline.c
@@ -437,7 +437,7 @@ static void ceol(void)
 
 static void clear_line(void)
 {
-    rl_point = -strlen(Prompt);
+    rl_point = -(int)strlen(Prompt);
     tty_put('\r');
     ceol();
     rl_point = 0;