diff --git a/doc/manual.txt b/doc/manual.txt
index 08ed6f8d16..c4b08a942b 100644
--- a/doc/manual.txt
+++ b/doc/manual.txt
@@ -5393,7 +5393,7 @@ should scan unions conservatively.
 Packed pragma
 -------------
 The `packed`:idx: pragma can be applied to any ``object`` type. It ensures 
-that the fields of an object is packed back-to-back in memory. It is useful 
+that the fields of an object are packed back-to-back in memory. It is useful 
 to store packets or messages from/to network or hardware drivers, and for 
 interoperability with C. Combining packed pragma with inheritance is not 
 defined, and it should not be used with GC'ed memory (ref's).