diff --git a/cpp/libc.cc b/cpp/libc.cc
index 94a54420f1..0f7fea7520 100644
--- a/cpp/libc.cc
+++ b/cpp/libc.cc
@@ -108,7 +108,7 @@ class RegexCache {
   std::vector<CacheEntry*> access_list_;
 };
 
-static RegexCache gRegexCache(100);
+static RegexCache gRegexCache(500);
 
 BigStr* gethostname() {
   // Note: Fixed issue #1656 - OS X and FreeBSD don't have HOST_NAME_MAX