diff --git a/loaih/build.py b/loaih/build.py
index 0a74e58..1b35aff 100644
--- a/loaih/build.py
+++ b/loaih/build.py
@@ -239,7 +239,9 @@ class Build(loaih.RemoteBuild):
             os.chdir(self.download_path)
             for archive in tarballs:
                 # If the archive is already there, do not do anything.
-                if os.path.exists(archive):
+                # If it is a daily build or a pre-release, due to filename
+                # clashes, redownload the whole build.
+                if os.path.exists(archive) and self.query not in { 'daily', 'prerelease' }:
                     continue
 
                 # Download the archive