diff --git a/core/prelude-core.el b/core/prelude-core.el
index bd88d1d..cce55f2 100644
--- a/core/prelude-core.el
+++ b/core/prelude-core.el
@@ -126,7 +126,7 @@ With a prefix ARG open line above the current line."
 (defun prelude-kill-whole-line (&optional arg)
   "A simple wrapper around command `kill-whole-line' that respects indentation.
 Passes ARG to command `kill-whole-line' when provided."
-  (interactive "P")
+  (interactive "p")
   (kill-whole-line arg)
   (back-to-indentation))