diff --git a/configure.ac b/configure.ac
index b8f95fef..c21d183d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -45,7 +45,7 @@ AC_LANG_POP(C++)
 AC_DEFINE(HAVE_CONFIG_H, 1, true if config.h was included)
 AC_DEFINE(USER_AGENT, [std::string(PACKAGE "/" VERSION "/") + torrent::version()], Http user agent)
 
-AC_CHECK_FUNC(posix_memalign)
+AC_CHECK_FUNCS(posix_memalign)
 TORRENT_CHECK_CACHELINE()
 
 CC_ATTRIBUTE_UNUSED(
diff --git a/src/core/dht_manager.cc b/src/core/dht_manager.cc
index 5f68f566..6a127545 100644
--- a/src/core/dht_manager.cc
+++ b/src/core/dht_manager.cc
@@ -73,8 +73,12 @@ DhtManager::load_dht_cache() {
   if (cache_file.is_open()) {
     cache_file >> cache;
 
-    if (cache_file.fail())
-      throw torrent::input_error("Invalid DHT cache.");
+    // If the cache file is corrupted we will just discard it with an
+    // error message.
+    if (cache_file.fail()) {
+      control->core()->push_log("DHT warning: Cache file corrupted, discarding.");
+      cache = torrent::Object::create_map();
+    }
   }
 
   try {