diff --git a/src/type-layout.md b/src/type-layout.md
index 2ee902aef0..a9f2b96f66 100644
--- a/src/type-layout.md
+++ b/src/type-layout.md
@@ -198,7 +198,7 @@ r[layout.repr.c.struct]
 #### `#[repr(C)]` Structs
 
 r[layout.repr.c.struct.align]
-The alignment of the struct is the alignment of the most-aligned field in it.
+The alignment of the struct is the alignment of the most-aligned field in it, or 1 if there are no fields.
 
 r[layout.repr.c.struct.size-field-offset]
 The size and offset of fields is determined by the following algorithm.