diff --git a/reg-tests/lua/b00002.vtc b/reg-tests/lua/b00002.vtc
index 6ab58f6b1..e1fe7f335 100644
--- a/reg-tests/lua/b00002.vtc
+++ b/reg-tests/lua/b00002.vtc
@@ -5,7 +5,6 @@ feature ignore_unknown_macro
 
 haproxy h1 -conf {
     global
-        nbthread 3
         lua-load ${testdir}/b00002.lua
         lua-load ${testdir}/b00002_print_r.lua
 
diff --git a/reg-tests/lua/b00003.vtc b/reg-tests/lua/b00003.vtc
index 89ab499c8..75cdd7d8d 100644
--- a/reg-tests/lua/b00003.vtc
+++ b/reg-tests/lua/b00003.vtc
@@ -30,7 +30,6 @@ haproxy h1 -conf {
 
     global
         lua-load ${testdir}/b00003.lua
-        nbthread 4
 
     frontend frt
         log ${Slog_addr}:${Slog_port} local0 debug err