diff --git a/Makefile b/Makefile
index 35491dc..a3d8581 100644
--- a/Makefile
+++ b/Makefile
@@ -3,6 +3,12 @@ OUT=my-log
 GOBIN=$(shell go env GOBIN)
 COVEROUT=cover.out
 COVERHTML=cover.html
+OPEN=xdg-open
+OS=$(shell uname -s)
+
+ifeq ($(OS),Darwin)
+OPEN=open
+endif
 
 .PHONY: help
 help: ## Show help for documented recipes
@@ -23,7 +29,8 @@ test: ## Test application and generate coverage report
 	$(MAKE) clean
 	$(MAKE) $(COVEROUT)
 
-$(COVEROUT): $(SOURCES) fmt
+$(COVEROUT): $(SOURCES)
+	$(MAKE) fmt
 	go test ./... -race -cover -coverprofile $@
 
 $(COVERHTML): $(COVEROUT)
@@ -33,8 +40,8 @@ $(COVERHTML): $(COVEROUT)
 report: $(COVERHTML) ## Generate a coverage report
 
 .PHONY: open-report
-open-report: report ## Open the coverage report in the default browser
-	xdg-open $(COVERHTML)
+open-report: $(COVERHTML) ## Open the coverage report in the default browser
+	$(OPEN) $<
 
 .PHONY: build
 build: $(OUT) ## Builds the application
diff --git a/files/append_test.go b/files/append_test.go
index 0976363..03f0253 100644
--- a/files/append_test.go
+++ b/files/append_test.go
@@ -211,7 +211,7 @@ func (s *AppendTestSuite) TestConfLoadErr() {
 
 func (s *AppendTestSuite) TestMkdirErr() {
 	// Don't run this test as root
-	config.Overrides["input.path"] = "/root/my-logs-test"
+	config.Overrides["input.path"] = "/var/my-logs-test"
 	defer func(path string) {
 		config.Overrides["input.path"] = path
 	}(s.dir)