diff --git a/gcc/c-family/ChangeLog b/gcc/c-family/ChangeLog
index fddfcd8c2f0..3c9732395d3 100644
--- a/gcc/c-family/ChangeLog
+++ b/gcc/c-family/ChangeLog
@@ -1,3 +1,7 @@
+2014-05-02  Marek Polacek  <polacek@redhat.com>
+
+	* c.opt (Wsizeof-pointer-memaccess): Describe option.
+
 2014-05-01  Marek Polacek  <polacek@redhat.com>
 
 	PR c/43245
diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt
index 1bbb81c8425..7aa9e23c10e 100644
--- a/gcc/c-family/c.opt
+++ b/gcc/c-family/c.opt
@@ -516,6 +516,7 @@ Warn about missing fields in struct initializers
 
 Wsizeof-pointer-memaccess
 C ObjC C++ ObjC++ Var(warn_sizeof_pointer_memaccess) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall)
+Warn about suspicious length parameters to certain string functions if the argument uses sizeof
 
 Wsuggest-attribute=format
 C ObjC C++ ObjC++ Var(warn_suggest_attribute_format) Warning