diff --git a/src/dispnew.c b/src/dispnew.c
index 53eb8984747..4a9f2bae44b 100644
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -1034,7 +1034,7 @@ copy_row_except_pointers (struct glyph_row *to, struct glyph_row *from)
 {
   enum { off = offsetof (struct glyph_row, x) };
 
-  memcpy (&to->x, &from->x, sizeof *to - off);
+  memcpy ((char *) to + off, (char *) from + off, sizeof *to - off);
 }