diff --git a/zlib/Jenkinsfile b/zlib/Jenkinsfile
index ce481f35b..af1356b98 100644
--- a/zlib/Jenkinsfile
+++ b/zlib/Jenkinsfile
@@ -15,8 +15,7 @@
 ////////////////////////////////////////////////////////////////////////////////
 
 def libfuzzerBuild = fileLoader.fromGit('infra/libfuzzer-pipeline.groovy',
-                                        'https://github.com/google/oss-fuzz.git',
-                                        'master', null, '')
+                                        'https://github.com/google/oss-fuzz.git')
 
 libfuzzerBuild {
   git = "https://github.com/madler/zlib.git"