diff --git a/nemu/Makefile b/nemu/Makefile
index 55d36f1..c7d3d80 100644
--- a/nemu/Makefile
+++ b/nemu/Makefile
@@ -93,6 +93,5 @@ integration-tests: $(IMAGES)
 	 test $$r -eq 0
 
 test: unit-tests integration-tests
-	@$(OBJ_DIR)/tests/expr_test
 
-.PHONY: test integration-tests unit-tests
\ No newline at end of file
+.PHONY: test unit-tests integration-tests
\ No newline at end of file
diff --git a/nemu/default.nix b/nemu/default.nix
index e97588e..53765d6 100644
--- a/nemu/default.nix
+++ b/nemu/default.nix
@@ -12,12 +12,12 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = with pkgs; [
     gnumake
+    pkg-config
     flex
     bison
   ];
 
   buildInputs = with pkgs; [
-    check
     readline
     libllvm
   ];
diff --git a/nemu/tests/Makefile b/nemu/tests/Makefile
index 6804b41..2e8c784 100644
--- a/nemu/tests/Makefile
+++ b/nemu/tests/Makefile
@@ -7,3 +7,4 @@ $(OBJ_DIR)/%: %.c $(TEST_OBJS) app
 	@$(CC) $(CFLAGS) -o $@.o -c $< 
 	@echo + LD $@
 	@$(LD) $(LIBS) $(LDFLAGS) -o $@ $(TEST_OBJS) $@.o
+	@$@
diff --git a/result b/result
index 88d0079..172ba27 120000
--- a/result
+++ b/result
@@ -1 +1 @@
-/nix/store/g0h98bppypvyz3z4sv45kl9218ad2gsq-nemu-2024-03-02
\ No newline at end of file
+/nix/store/d0jlcjdrgsb5pis8flyy5ihifdnfhms5-am-kernels-riscv32-none-elf-2024.02.18
\ No newline at end of file