diff --git a/poppler/XRef.cc b/poppler/XRef.cc
index 5d3b98ff..67c48037 100644
--- a/poppler/XRef.cc
+++ b/poppler/XRef.cc
@@ -276,7 +276,7 @@ void XRef::init() {
   modified = gFalse;
   streamEnds = nullptr;
   streamEndsLen = 0;
-  objStrs = new PopplerCache(5);
+  objStrs = new PopplerCache(50);
   mainXRefEntriesOffset = 0;
   xRefStream = gFalse;
   scannedSpecialFlags = gFalse;