diff --git a/build.gradle b/build.gradle
index 0a6441c4128f03d1f59ca966a2cc61f4df874d16..cb6219c9180f2bdf398e4a96a74dfe631e582cab 100644
--- a/build.gradle
+++ b/build.gradle
@@ -44,7 +44,7 @@ repositories {
  */
 task downloadZipFile(type: Download) {
     src 'http://pageperso.lif.univ-mrs.fr/~emmanuel.godard/davis-beta-' + davisVersion
-    dest new File(davisInstall, 'davis-beta-' + davisVersion)
+    dest new File(davisInstall, 'davis-beta-' + davisVersion + '.zip')
     overwrite false // to download only once
 }