diff --git a/src/managesieve/main.c b/src/managesieve/main.c
index c4a65b86f45c21c285f46eda43eeb339b73e2630..8264c2efe33db895594c55cc0cbff4892bc99c5c 100644
--- a/src/managesieve/main.c
+++ b/src/managesieve/main.c
@@ -27,7 +27,7 @@
 #include <unistd.h>
 
 #define IS_STANDALONE() \
-        (getenv(MASTER_UID_ENV) == NULL)
+        (getenv(MASTER_IS_PARENT_ENV) == NULL)
 
 #define MANAGESIEVE_DIE_IDLE_SECS 10