diff --git a/openbsc/contrib/gprs/gprs-split-trace-by-tlli.lua b/openbsc/contrib/gprs/gprs-split-trace-by-tlli.lua
index af70847..ef16105 100644
--- a/openbsc/contrib/gprs/gprs-split-trace-by-tlli.lua
+++ b/openbsc/contrib/gprs/gprs-split-trace-by-tlli.lua
@@ -22,8 +22,9 @@
 			local ttli_str = tostring(ttli)
 			ttli_dmp = dumpers[ttli_str]
 			if not ttli_dmp then
-				print("Creating TLLI " .. tostring(ttli) .. " " .. ttli_str)
-				ttli_dmp = Dumper.new_for_current(dir .. "/" .. ttli_str .. ".pcap")
+				local ttli_hex = string.format("0x%x", tonumber(ttli_str))
+				print("Creating dump for TLLI " .. ttli_hex)
+				ttli_dmp = Dumper.new_for_current(dir .. "/" .. ttli_hex .. ".pcap")
 				dumpers[ttli_str] = ttli_dmp
 			end
 			ttli_dmp:dump_current()
diff --git a/openbsc/contrib/gprs/gprs-verify-nu.lua b/openbsc/contrib/gprs/gprs-verify-nu.lua
index 63cc492..f6f42c4 100644
--- a/openbsc/contrib/gprs/gprs-verify-nu.lua
+++ b/openbsc/contrib/gprs/gprs-verify-nu.lua
@@ -37,9 +37,13 @@
 				return
 			end
 
+			local function tohex(number)
+				return string.format("0x%x", tonumber(number))
+			end
+
 			nu_state_src[src_key] = llc_nu
 			if tonumber(last_nu) + 1 ~= tonumber(llc_nu) then
-				print("JUMP in N(U) on TLLI " .. bssgp_ttli .. " and SAPI: " .. llc_sapi)
+				print("JUMP in N(U) on TLLI " .. tohex(bssgp_ttli) .. " and SAPI: " .. llc_sapi)
 				print("\t last: " .. last_nu .. " now: " .. llc_nu)
 			end
 		end