diff --git a/speaker_driver.lua b/speaker_driver.lua
index 5d0c491..7f22f31 100644
--- a/speaker_driver.lua
+++ b/speaker_driver.lua
@@ -9,12 +9,12 @@ local function getFileName(name)
     return fullFile
 end
 
-local function randomFileName(extension)
+local function randomFileName()
     local name = ""
     for i = 1, 12 do
         name = name .. string.char(math.random(97, 122)) -- a–z
     end
-    return name .. (extension or "")
+    return name
 end
 
 local function playSound(speaker, fileName)
@@ -45,14 +45,16 @@ local function playTTSFile(speakers, value)
     local message = textutils.urlEncode(value)
     local url = "http://api.astrocore.space/api/TextToSpeech?message=" .. message
     local response, err = http.get { url = url, binary = true }
-    local name = randomFileName(".dfpwm")
+    local name = randomFileName()
+    local fileName = name .. ".dfpwm"
+
     local fileData = response.readAll()
-    local file = fs.open(name,"w")
+    local file = fs.open(fileName,"w")
     file.write(fileData)
     file.close()
     response.close()
     playSound(speakers, name)
-    shell.execute("rm", name)
+    shell.execute("rm", fileName)
 end
 
 local function createSoundFile(fileName)