diff --git a/firmware/controllers/lua/lua_lib.h b/firmware/controllers/lua/lua_lib.h
index b4423774c4..bb72fcb8e7 100644
--- a/firmware/controllers/lua/lua_lib.h
+++ b/firmware/controllers/lua/lua_lib.h
@@ -124,7 +124,7 @@ end \
 "
 
 #define HYUNDAI_SUM_NIBBLES "\
-function hyuindaiSumNibbles(seed) \
+function hyuindaiSumNibbles(data, seed) \
   local sum = seed \
   for i = 1, 7, 1 \
   do \
diff --git a/unit_tests/tests/lua/test_lua_kia.cpp b/unit_tests/tests/lua/test_lua_kia.cpp
index a913a50cbf..aeba92b875 100644
--- a/unit_tests/tests/lua/test_lua_kia.cpp
+++ b/unit_tests/tests/lua/test_lua_kia.cpp
@@ -31,10 +31,10 @@ rpm = 990
 }
 
 TEST(LuaKia, calcSumOfNibbles) {
-#define real81Packet "\ndata = { 0x40, 0x85, 0x5F, 0x00, 0x00, 0x00, 0x00, 0xED}\n "
+#define real81Packet "\npacket = { 0x40, 0x85, 0x5F, 0x00, 0x00, 0x00, 0x00, 0xED}\n "
 	const char* script = HYUNDAI_SUM_NIBBLES	real81Packet	R"(
 function testFunc()
-  return hyuindaiSumNibbles(0xD)
+  return hyuindaiSumNibbles(packet, 0xD)
 end
     	)";
 	EXPECT_NEAR_M3(testLuaReturnsNumberOrNil(script).value_or(0), 0xE);