diff --git a/config/env.go b/config/env.go
index f9e4f03..195bbc3 100644
--- a/config/env.go
+++ b/config/env.go
@@ -54,9 +54,17 @@ func LoadEnv() error {
 }
 
 func setDefaultEnvs() {
-	os.Setenv(Prefix+"UploadDir", "uploads/")
-	os.Setenv(Prefix+"LOG_FILE", "auth_failures.log")
+	if _, ok := os.LookupEnv(Prefix + "UploadDir"); !ok {
+		os.Setenv(Prefix+"UploadDir", "uploads/")
+	}
+	if _, ok := os.LookupEnv(Prefix + "LOG_FILE"); !ok {
+		os.Setenv(Prefix+"LOG_FILE", "auth_failures.log")
+	}
 
-	os.Setenv(Prefix+"MaxFailedAttempts", "3")
-	os.Setenv(Prefix+"BanDuration", "5")
+	if _, ok := os.LookupEnv(Prefix + "MaxFailedAttempts"); !ok {
+		os.Setenv(Prefix+"MaxFailedAttempts", "3")
+	}
+	if _, ok := os.LookupEnv(Prefix + "BanDuration"); !ok {
+		os.Setenv(Prefix+"BanDuration", "5")
+	}
 }