diff --git a/lib/heat b/lib/heat
index f66f0a8454..26d58e0d7c 100644
--- a/lib/heat
+++ b/lib/heat
@@ -96,7 +96,7 @@ function configure_heat {
     iniset $HEAT_CONF DEFAULT heat_waitcondition_server_url http://$HEAT_API_CFN_HOST:$HEAT_API_CFN_PORT/v1/waitcondition
     iniset $HEAT_CONF DEFAULT heat_watch_server_url http://$HEAT_API_CW_HOST:$HEAT_API_CW_PORT
     iniset $HEAT_CONF database connection `database_connection_url heat`
-    iniset $HEAT_CONF DEFAULT auth_encryption_key `hexdump -n 16 -v -e '/1 "%02x"' /dev/random`
+    iniset $HEAT_CONF DEFAULT auth_encryption_key `hexdump -n 16 -v -e '/1 "%02x"' /dev/urandom`
 
     # logging
     iniset $HEAT_CONF DEFAULT debug $ENABLE_DEBUG_LOG_LEVEL