diff --git a/gitea_auto_update/lib/download.py b/gitea_auto_update/lib/download.py
index 68a8214..f178ad7 100644
--- a/gitea_auto_update/lib/download.py
+++ b/gitea_auto_update/lib/download.py
@@ -28,7 +28,7 @@ class Download:
         self.downloadGiteaFiles()
         self.checkAndExtract()
 
-    def isTool(name):
+    def isTool(self, name):
         # Function to check if tool is available
         ##Check whether `name` is on PATH and marked as executable.
         return which(name) is not None
@@ -74,4 +74,4 @@ class Download:
             self.extractFile()
         else:
             logging.error('Download: error: sha256sum failed')
-            quit()
\ No newline at end of file
+            quit()