diff --git a/koan/app.py b/koan/app.py
index 549026f..cc6d64f 100755
--- a/koan/app.py
+++ b/koan/app.py
@@ -701,7 +701,8 @@ class Koan:
             tree = profile_data["ks_meta"].split("@@")[-1].strip()
             # Ensure we only take the tree in case ks_meta args are passed
             tree = tree.split()[0]
-            profile_data["install_tree"] = "http://" + profile_data["http_server"] + tree
+#            profile_data["install_tree"] = "http://" + profile_data["http_server"] + tree
+            profile_data["install_tree"] = tree
 
             if self.safe_load(profile_data,"install_tree"):
                 print "install_tree:", profile_data["install_tree"]
diff --git a/koan/virtinstall.py b/koan/virtinstall.py
index 5e62048..ba04377 100644
--- a/koan/virtinstall.py
+++ b/koan/virtinstall.py
@@ -218,6 +218,8 @@ def build_commandline(uri,
     os_version = profile_data.get("os_version")
     if os_version and breed == "ubuntu":
         os_version = "ubuntu%s" % os_version
+    if os_version and breed == "debian":
+        os_version = "debian%s" % os_version
 
     net_model = None
     disk_bus = None