diff --git a/error.c b/error.c
index ae0f79180c..efcf278793 100644
--- a/error.c
+++ b/error.c
@@ -880,9 +880,7 @@ exc_to_s(VALUE exc)
  *   exception.message   ->  string
  *
  * Returns the result of invoking <code>exception.to_s</code>.
- * Normally this returns the exception's message or name. By
- * supplying a to_str method, exceptions are agreeing to
- * be used where Strings are expected.
+ * Normally this returns the exception's message or name.
  */
 
 static VALUE
diff --git a/version.h b/version.h
index e58add1dc8..d6583b977d 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.4.0"
 #define RUBY_RELEASE_DATE "2017-03-12"
-#define RUBY_PATCHLEVEL 32
+#define RUBY_PATCHLEVEL 33
 
 #define RUBY_RELEASE_YEAR 2017
 #define RUBY_RELEASE_MONTH 3