diff --git a/irssi.conf b/irssi.conf
index 3e5285b1..17846bd7 100644
--- a/irssi.conf
+++ b/irssi.conf
@@ -122,7 +122,7 @@ aliases = {
   GOTO = "sb goto";
   CHAT = "dcc chat";
   RUN = "SCRIPT LOAD";
-  CALC = "exec - if which bc &>/dev/null\\; then echo '$*' | bc | awk '{print \"$*=\"$$1}'\\; else echo bc was not found\\; fi";
+  CALC = "exec - if command -v bc >/dev/null 2>&1\\; then printf '%s=' '$*'\\; echo '$*' | bc -l\\; else echo bc was not found\\; fi";
   SBAR = "STATUSBAR";
   INVITELIST = "mode $C +I";
   Q = "QUERY";