diff --git a/bin/plugin-server b/bin/plugin-server
index 825045ace03..c7b341ddd2e 100755
--- a/bin/plugin-server
+++ b/bin/plugin-server
@@ -27,7 +27,7 @@ if [[ -n $POSTHOG_DB_NAME ]]; then
 fi
 
 if [[ -z $REDIS_URL ]]; then
-  [[ -n $POSTHOG_REDIS_PASSWORD ]] && REDIS_PASSWORD_COMPONENT="$POSTHOG_REDIS_PASSWORD@"
+  [[ -n $POSTHOG_REDIS_PASSWORD ]] && REDIS_PASSWORD_COMPONENT=":$POSTHOG_REDIS_PASSWORD@"
   export REDIS_URL="redis://${REDIS_PASSWORD_COMPONENT}${POSTHOG_REDIS_HOST:-"localhost"}:${POSTHOG_REDIS_PORT:-"6379"}/"
 fi