diff --git a/bindings/python/src/ChunkIterator.hh b/bindings/python/src/ChunkIterator.hh
index 3770bb616ac..7fbe931bffd 100644
--- a/bindings/python/src/ChunkIterator.hh
+++ b/bindings/python/src/ChunkIterator.hh
@@ -98,7 +98,7 @@ namespace PyXRootD
 
     else {
       self->currentOffset += self->chunksize;
-      pychunk = PyUnicode_FromStringAndSize( (const char*) chunk->GetBuffer(),
+      pychunk = PyBytes_FromStringAndSize( (const char*) chunk->GetBuffer(),
                                                          chunk->GetSize() );
     }
 
diff --git a/bindings/python/src/Conversions.hh b/bindings/python/src/Conversions.hh
index a644a6eb23b..6c7d7353e0f 100644
--- a/bindings/python/src/Conversions.hh
+++ b/bindings/python/src/Conversions.hh
@@ -241,7 +241,7 @@ namespace PyXRootD
   {
       static PyObject* Convert( XrdCl::Buffer *buffer )
       {
-        return PyUnicode_FromStringAndSize( buffer->GetBuffer(), buffer->GetSize() );
+        return PyBytes_FromStringAndSize( buffer->GetBuffer(), buffer->GetSize() );
       }
   };
 
@@ -249,7 +249,7 @@ namespace PyXRootD
   {
       static PyObject* Convert( XrdCl::ChunkInfo *chunk )
       {
-        PyObject *o = PyUnicode_FromStringAndSize( (const char*)chunk->buffer,
+        PyObject *o = PyBytes_FromStringAndSize( (const char*)chunk->buffer,
                                                   chunk->length );
         delete[] (char*) chunk->buffer;
         return o;
@@ -268,7 +268,7 @@ namespace PyXRootD
         for ( uint32_t i = 0; i < chunks.size(); ++i ) {
           XrdCl::ChunkInfo chunk = chunks.at( i );
 
-          PyObject *buffer = PyUnicode_FromStringAndSize( (const char *) chunk.buffer,
+          PyObject *buffer = PyBytes_FromStringAndSize( (const char *) chunk.buffer,
                                                         chunk.length );
           delete[] (char*) chunk.buffer;
 
diff --git a/bindings/python/src/PyXRootDFile.cc b/bindings/python/src/PyXRootDFile.cc
index f6d9608b898..c366e7b1c30 100644
--- a/bindings/python/src/PyXRootDFile.cc
+++ b/bindings/python/src/PyXRootDFile.cc
@@ -195,7 +195,7 @@ namespace PyXRootD
     else {
       uint32_t bytesRead = 0;
       async( status = self->file->Read( offset, size, buffer, bytesRead, timeout ) );
-      pyresponse = PyUnicode_FromStringAndSize( buffer, bytesRead );
+      pyresponse = PyBytes_FromStringAndSize( buffer, bytesRead );
       delete[] buffer;
     }