diff --git a/daemon/face/datagram-face.hpp b/daemon/face/datagram-face.hpp
index 886a8b3..adbf9e6 100644
--- a/daemon/face/datagram-face.hpp
+++ b/daemon/face/datagram-face.hpp
@@ -215,8 +215,9 @@
   NFD_LOG_FACE_TRACE("Received: " << nBytesReceived << " bytes");
   this->getMutableCounters().getNInBytes() += nBytesReceived;
 
+  bool isOk = false;
   Block element;
-  bool isOk = Block::fromBuffer(buffer, nBytesReceived, element);
+  std::tie(isOk, element) = Block::fromBuffer(buffer, nBytesReceived);
   if (!isOk)
     {
       NFD_LOG_FACE_WARN("Failed to parse incoming packet");
diff --git a/daemon/face/ethernet-face.cpp b/daemon/face/ethernet-face.cpp
index 8bd2c7b..d2cd9a1 100644
--- a/daemon/face/ethernet-face.cpp
+++ b/daemon/face/ethernet-face.cpp
@@ -381,8 +381,9 @@
   length -= ethernet::HDR_LEN;
 
   /// \todo Reserve space in front and at the back of the underlying buffer
+  bool isOk = false;
   Block fragment;
-  bool isOk = Block::fromBuffer(packet, length, fragment);
+  std::tie(isOk, fragment) = Block::fromBuffer(packet, length);
   if (!isOk)
     {
       NFD_LOG_FACE_WARN("Block received from " << sourceAddress.toString()
diff --git a/daemon/face/stream-face.hpp b/daemon/face/stream-face.hpp
index fb51afd..fa743de 100644
--- a/daemon/face/stream-face.hpp
+++ b/daemon/face/stream-face.hpp
@@ -268,22 +268,21 @@
 
   bool isOk = true;
   Block element;
-  while (m_inputBufferSize - offset > 0)
-    {
-      isOk = Block::fromBuffer(m_inputBuffer + offset, m_inputBufferSize - offset, element);
-      if (!isOk)
-        break;
+  while (m_inputBufferSize - offset > 0) {
+    std::tie(isOk, element) = Block::fromBuffer(m_inputBuffer + offset, m_inputBufferSize - offset);
+    if (!isOk)
+      break;
 
-      offset += element.size();
+    offset += element.size();
 
-      BOOST_ASSERT(offset <= m_inputBufferSize);
+    BOOST_ASSERT(offset <= m_inputBufferSize);
 
-      if (!this->decodeAndDispatchInput(element))
-        {
-          NFD_LOG_FACE_WARN("Received unrecognized TLV block of type " << element.type());
-          // ignore unknown packet and proceed
-        }
+    if (!this->decodeAndDispatchInput(element)) {
+      NFD_LOG_FACE_WARN("Received unrecognized TLV block of type " << element.type());
+      // ignore unknown packet and proceed
     }
+  }
+
   if (!isOk && m_inputBufferSize == ndn::MAX_NDN_PACKET_SIZE && offset == 0)
     {
       NFD_LOG_FACE_WARN("Failed to parse incoming packet or packet too large to process");
diff --git a/daemon/face/websocket-face.cpp b/daemon/face/websocket-face.cpp
index 27a8f57..007e800 100644
--- a/daemon/face/websocket-face.cpp
+++ b/daemon/face/websocket-face.cpp
@@ -115,9 +115,10 @@
   this->getMutableCounters().getNInBytes() += msg.size();
 
   // Try to parse message data
+  bool isOk = false;
   Block element;
-  bool isOk = Block::fromBuffer(reinterpret_cast<const uint8_t*>(msg.c_str()),
-                                msg.size(), element);
+  std::tie(isOk, element) = Block::fromBuffer(reinterpret_cast<const uint8_t*>(msg.c_str()),
+                                              msg.size());
   if (!isOk)
     {
       NFD_LOG_FACE_WARN("Received block is invalid or too large to process");