diff --git a/src/x11/dnd.cpp b/src/x11/dnd.cpp
index a3e5e5d320..30b64bc337 100644
--- a/src/x11/dnd.cpp
+++ b/src/x11/dnd.cpp
@@ -109,7 +109,7 @@ bool wxFileDropTarget::OnDrop(long x, long y, const void *data, size_t size )
 
   bool ret = OnDropFiles( x, y, 1, files );
 
-  free( files );
+  delete[] files;
 
   return ret;
 }