diff --git a/src/Illuminate/Http/FileHelpers.php b/src/Illuminate/Http/FileHelpers.php
index 8da4518129ed..ed405509c0a3 100644
--- a/src/Illuminate/Http/FileHelpers.php
+++ b/src/Illuminate/Http/FileHelpers.php
@@ -57,6 +57,11 @@ public function hashName($path = null)
 
         $hash = $this->hashName ?: $this->hashName = Str::random(40);
 
-        return $path.$hash.'.'.$this->guessExtension();
+        $extension = $this->guessExtension();
+        if ($extension) {
+            $extension = '.'.$extension;
+        }
+
+        return $path.$hash.$extension;
     }
 }