diff --git a/lab/cfg/cfg.c b/lab/cfg/cfg.c
index 5ad7df9..cb0f40a 100644
--- a/lab/cfg/cfg.c
+++ b/lab/cfg/cfg.c
@@ -68,10 +68,7 @@ struct tac_function {
 
 struct tac_instruction {
 	enum tac_instruction_op op;
-
 	uint64_t label;
-	const char *function;
-
 	struct tac_instruction *next;
 };
 
@@ -124,7 +121,7 @@ struct tac_function example_function()
 	append_instruction(&function, (struct tac_instruction){.op = TAC_INSTRUCTION_OP_PUSH});
 	append_instruction(&function, (struct tac_instruction){.op = TAC_INSTRUCTION_OP_PUSH});
 	append_instruction(&function, (struct tac_instruction){.op = TAC_INSTRUCTION_OP_PUSH});
-	append_instruction(&function, (struct tac_instruction){.op = TAC_INSTRUCTION_OP_CALL, .function = "fun"});
+	append_instruction(&function, (struct tac_instruction){.op = TAC_INSTRUCTION_OP_CALL});
 	append_instruction(&function, (struct tac_instruction){.op = TAC_INSTRUCTION_OP_RETURN});
 
 	return function;