1 files changed, 3 insertions, 1 deletions

diff --git a/src/lanes.c b/src/lanes.c
index 270c01d..64c144c 100644
--- a/src/lanes.c
+++ b/src/lanes.c
@@ -216,7 +216,9 @@ static void securize_debug_threadname( lua_State* L, struct s_lane* s)
         STACK_GROW( L, 3);
         lua_getuservalue( L, 1);
         lua_newtable( L);
-        s->debug_name = lua_pushstring( L, s->debug_name);
+        // Lua 5.1 can't do 's->debug_name = lua_pushstring( L, s->debug_name);'
+        lua_pushstring( L, s->debug_name);
+        s->debug_name = lua_tostring( L, -1);
         lua_rawset( L, -3);
         lua_pop( L, 1);
         STACK_END( L, 0);