diff --git a/test/runtests.sh b/test/runtests.sh
index 53c3ba8df..c6cb3ca62 100755
--- a/test/runtests.sh
+++ b/test/runtests.sh
@@ -95,7 +95,7 @@ fi
 # descriptors open for a few seconds (even with an explicit inputStream.close() in the case of
 # the latter), so a source installation that copies ~500 translators and styles (with fds for
 # source and target) can exceed the default 1024 limit.
-ulimit -n 5000
+ulimit -n 4096
 
 # Set up profile directory
 PROFILE="`mktemp -d 2>/dev/null || mktemp -d -t 'zotero-unit'`"