diff --git a/resources/install/scripts/app/voicemail/resources/functions/advanced.lua b/resources/install/scripts/app/voicemail/resources/functions/advanced.lua
index 5b6128b7db..050a2007e6 100644
--- a/resources/install/scripts/app/voicemail/resources/functions/advanced.lua
+++ b/resources/install/scripts/app/voicemail/resources/functions/advanced.lua
@@ -62,7 +62,7 @@
 				if (dtmf_digits == "1") then
 					--To record a greeting press 1
 					timeouts = 0;
-					record_greeting('',"advanced");
+					record_greeting(nil,"advanced");
 				elseif (dtmf_digits == "2") then
 					--To choose greeting press 2
 					timeouts = 0;