diff --git a/gitinspector/gravatar.py b/gitinspector/gravatar.py
index 270c22d..b06ccba 100644
--- a/gitinspector/gravatar.py
+++ b/gitinspector/gravatar.py
@@ -30,7 +30,7 @@ from . import gitinspector
 
 def get_url(email, size=20):
 	if gitinspector.github_usernames and email in gitinspector.github_usernames:
-		return "https://github.com/" + gitinspector.github_usernames[email] + ".png?size=20"
+		return "https://github.com/" + gitinspector.github_usernames[email] + ".png?size=" + str(size)
 	md5hash = hashlib.md5(email.encode("utf-8").lower().strip()).hexdigest()
 	base_url = "https://www.gravatar.com/avatar/" + md5hash
 	params = None