diff --git a/openbsc/contrib/gprs/gprs-verify-nu.lua b/openbsc/contrib/gprs/gprs-verify-nu.lua
index 4ec7c61..e44fdd1 100644
--- a/openbsc/contrib/gprs/gprs-verify-nu.lua
+++ b/openbsc/contrib/gprs/gprs-verify-nu.lua
@@ -43,7 +43,7 @@
 
 			nu_state_src[src_key] = llc_nu
 			if tonumber(last_nu) + 1 ~= tonumber(llc_nu) then
-				print("JUMP in N(U) on TLLI " .. tohex(bssgp_tlli) .. " and SAPI: " .. llc_sapi)
+				print("JUMP in N(U) on TLLI " .. tohex(bssgp_tlli) .. " and SAPI: " .. llc_sapi .. " src: " .. ip_src)
 				print("\t last: " .. last_nu .. " now: " .. llc_nu)
 			end
 		end