diff --git a/firmware/controllers/lua/lua_lib.h b/firmware/controllers/lua/lua_lib.h
index c86bf7587c..17ccc2f856 100644
--- a/firmware/controllers/lua/lua_lib.h
+++ b/firmware/controllers/lua/lua_lib.h
@@ -6,7 +6,7 @@
  \
   local index = 1 \
   while data1[index] ~= nil do \
-	if data1[index] ~= data1[index] then \
+	if data1[index] ~= data2[index] then \
        return -1 - index \
     end \
 	index = index + 1 \
diff --git a/unit_tests/tests/lua/test_lua_vag.cpp b/unit_tests/tests/lua/test_lua_vag.cpp
index 15c01374b7..c7d8aced63 100644
--- a/unit_tests/tests/lua/test_lua_vag.cpp
+++ b/unit_tests/tests/lua/test_lua_vag.cpp
@@ -29,7 +29,7 @@ TEST(LuaVag, packMotor1) {
 		data = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
 
 		setTwoBytes(data, 2, 4 * rpm)
-		expected = { 0x00, 0x00, 0xDF, 0x12, 0x00, 0x00, 0x00, 0x00 }
+		expected = { 0x00, 0x00, 0xDC, 0x12, 0x00, 0x00, 0x00, 0x00 }
 --		print(data)
 		return equals(data, expected)
 	end