diff --git a/.gitignore b/.gitignore
index 8a1f524..9908da4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,4 +11,5 @@ note/
 .jvmrc
 .DS_Store
 vendor/
-c.out
\ No newline at end of file
+c.out
+c.out.tmp
\ No newline at end of file
diff --git a/Makefile b/Makefile
index f0b088c..45978e8 100644
--- a/Makefile
+++ b/Makefile
@@ -16,8 +16,8 @@ generate-mock:
 # run unit test
 unit-test:
 	mkdir -p artifacts/report/coverage
-	go test -v -json -cover -coverprofile c.out ./...
-	go tool cover -html=c.out -o artifacts/report/coverage/index.html
+	go test -v -json -cover -coverprofile c.out.tmp ./...
+	cat c.out.tmp | grep -v "_mock.go" > c.out
 
 # build kt project
 build: build-connect build-shadow build-server build-dashboard