diff --git a/source/classes.tex b/source/classes.tex
index bbad2eca06..09981a5418 100644
--- a/source/classes.tex
+++ b/source/classes.tex
@@ -880,8 +880,8 @@
 \pnum
 Two standard-layout struct\iref{class.prop} types are
 \defnx{layout-compatible classes}{layout-compatible!class} if
-their common initial sequence comprises all members and bit-fields of
-both classes\iref{basic.types}.
+their common initial sequence comprises all non-static data members and
+bit-fields of both classes\iref{basic.types}.
 
 \pnum
 Two standard-layout unions are layout-compatible if they