diff --git a/toonz/sources/image/tif/tiio_tif.cpp b/toonz/sources/image/tif/tiio_tif.cpp
index 74f8869..3aff309 100644
--- a/toonz/sources/image/tif/tiio_tif.cpp
+++ b/toonz/sources/image/tif/tiio_tif.cpp
@@ -758,7 +758,7 @@ TifWriter::TifWriter()
 TifWriter::~TifWriter() {
   if (m_tiff) TIFFClose(m_tiff);
 
-  delete m_lineBuffer;
+  delete[] m_lineBuffer;
   delete m_properties;
 }