diff --git a/relp_handler.go b/relp_handler.go
index 3c98bae..01837de 100644
--- a/relp_handler.go
+++ b/relp_handler.go
@@ -10,6 +10,7 @@ import (
 	"net"
 	"net/url"
 	"os"
+	"os"
 	"path/filepath"
 	"strconv"
 	"time"
@@ -34,7 +35,7 @@ func getEnvAsDuration(name string, defaultVal time.Duration) time.Duration {
 }
 
 var (
-	cacheDir          = os.Getenv("LOGGER_CACHE_DIR")
+	cacheDir, _       = os.UserCacheDir()
 	diskBufferLimit   = getEnvAsInt("LOGGER_DISK_BUFFER_LIMIT", 100)
 	diskWriteInterval = getEnvAsDuration("LOGGER_DISK_WRITE_INTERVAL", time.Second)
 	relpDebug         = os.Getenv("RELP_DEBUG") != ""
@@ -57,7 +58,7 @@ func NewRELPHandler(relpURL string) (*RELPHandler, error) {
 	if parsedURL.Scheme != "tcp" {
 		return nil, fmt.Errorf("RELP URL must have the tcp scheme, got %s", parsedURL.Scheme)
 	}
-	if err := os.MkdirAll(cacheDir, 0755); err != nil {
+	if err := os.MkdirAll(filepath.Join(cacheDir, "simplelog"), 0755); err != nil {
 		return nil, fmt.Errorf("Failed to create cache directory: %v", err)
 	}
 	r := &RELPHandler{
@@ -257,7 +258,7 @@ func (r *RELPHandler) Shutdown() error {
 }
 
 func (r *RELPHandler) writeFailedToDisk(event Event) {
-	fileName := filepath.Join(cacheDir, uuid.New().String()+".logevent")
+	fileName := filepath.Join(cacheDir, "simplelog", uuid.New().String()+".logevent")
 	data, _ := json.Marshal(event)
 	ioutil.WriteFile(fileName, data, 0600)
 }