diff --git a/src/cryfs_lib/CryDevice.cpp b/src/cryfs_lib/CryDevice.cpp
index 9cbe2ee7..70e512c2 100644
--- a/src/cryfs_lib/CryDevice.cpp
+++ b/src/cryfs_lib/CryDevice.cpp
@@ -29,7 +29,7 @@ Key CryDevice::GetOrCreateRootKey(CryConfig *config) {
   string root_key = config->RootBlock();
   if (root_key == "") {
     auto key = CreateRootBlockAndReturnKey();
-    config->SetRootBlock(key.AsString());
+    config->SetRootBlock(key.ToString());
     return key;
   }
 
diff --git a/src/cryfs_lib/impl/DirBlock.cpp b/src/cryfs_lib/impl/DirBlock.cpp
index 0c2c7891..88d7506b 100644
--- a/src/cryfs_lib/impl/DirBlock.cpp
+++ b/src/cryfs_lib/impl/DirBlock.cpp
@@ -63,7 +63,7 @@ const char *DirBlock::readAndAddNextChild(const char *pos, vector<string> *resul
 }
 
 void DirBlock::AddChild(const std::string &name, const Key &blockKey) {
-  string blockKeyStr = blockKey.AsString();
+  string blockKeyStr = blockKey.ToString();
 
   char *insertPos = entriesEnd();
   assertEnoughSpaceLeft(insertPos, name.size() + 1 + blockKeyStr.size() + 1);