diff --git a/src/buffer.hh b/src/buffer.hh
index 4a1b3dcd..cc09831b 100644
--- a/src/buffer.hh
+++ b/src/buffer.hh
@@ -42,7 +42,6 @@ public:
 
     BufferIterator() : m_buffer(nullptr) {}
     BufferIterator(const Buffer& buffer, BufferCoord coord);
-    BufferIterator& operator=(const BufferIterator& iterator);
 
     bool operator== (const BufferIterator& iterator) const;
     bool operator!= (const BufferIterator& iterator) const;
diff --git a/src/buffer_iterator.inl.hh b/src/buffer_iterator.inl.hh
index 9970d4dd..56d7efa1 100644
--- a/src/buffer_iterator.inl.hh
+++ b/src/buffer_iterator.inl.hh
@@ -28,13 +28,6 @@ inline bool BufferIterator::is_valid() const
               column() == m_buffer->m_lines.back().length()));
 }
 
-inline BufferIterator& BufferIterator::operator=(const BufferIterator& iterator)
-{
-    m_buffer = iterator.m_buffer;
-    m_coord = iterator.m_coord;
-    return *this;
-}
-
 inline bool BufferIterator::operator==(const BufferIterator& iterator) const
 {
     assert(m_buffer == iterator.m_buffer);