diff --git a/etc/zebradb/zebra-biblios.cfg b/etc/zebradb/zebra-biblios.cfg
index 679b717ed8..5bfe38e1c6 100644
--- a/etc/zebradb/zebra-biblios.cfg
+++ b/etc/zebradb/zebra-biblios.cfg
@@ -56,3 +56,4 @@ keyTmpDir: __ZEBRA_DATA_DIR__/biblios/key
 # Approx. Memory usage during indexing
 memMax: 50M
 rank:rank-1
+truncmax: 1000000000