diff --git a/aurweb/util.py b/aurweb/util.py
index b95fc6a3..62575c71 100644
--- a/aurweb/util.py
+++ b/aurweb/util.py
@@ -84,9 +84,8 @@ def valid_pgp_fingerprint(fp):
 
 
 def valid_ssh_pubkey(pk):
-    valid_prefixes = ("ssh-rsa", "ecdsa-sha2-nistp256",
-                      "ecdsa-sha2-nistp384", "ecdsa-sha2-nistp521",
-                      "ssh-ed25519")
+    valid_prefixes = aurweb.config.get("auth", "valid-keytypes")
+    valid_prefixes = set(valid_prefixes.split(" "))
 
     has_valid_prefix = False
     for prefix in valid_prefixes: