diff --git a/functions/misc.zsh b/functions/misc.zsh
index 8b2ea82..939231f 100755
--- a/functions/misc.zsh
+++ b/functions/misc.zsh
@@ -202,9 +202,7 @@ fvim() {
 
 # retry command until it succeeds (waiting one second or $RETRY_INTERVAL)
 function retry() {
-    local _retry_interval
-    if [[ -z "$RETRY_INTERVAL" ]]; then _retry_interval=1; else _retry_interval=$RETRY_INTERVAL; fi
-    until $@; do sleep $_retry_interval; done
+    until $@; do sleep ${RETRY_INTERVAL:-1}; done
 }