diff --git a/ChangeLog b/ChangeLog
index 375befc589..573e5c5daf 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sun Mar 26 02:32:12 2017  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* win32/win32.c (poll_child_status): rb_w32_wait_events_blocking() sets
+	  errno internally, then should not set it here.
+
 Sun Mar 26 02:13:04 2017  Koichi Sasada  <ko1@atdot.net>
 
 	* test/ruby/test_exception.rb: fix thread issues.
diff --git a/version.h b/version.h
index d569ac2914..7aa76b0f4e 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.2.7"
 #define RUBY_RELEASE_DATE "2017-03-26"
-#define RUBY_PATCHLEVEL 441
+#define RUBY_PATCHLEVEL 442
 
 #define RUBY_RELEASE_YEAR 2017
 #define RUBY_RELEASE_MONTH 3
diff --git a/win32/win32.c b/win32/win32.c
index abd3bd6994..deb04965a2 100644
--- a/win32/win32.c
+++ b/win32/win32.c
@@ -4172,7 +4172,6 @@ poll_child_status(struct ChildRecord *child, int *stat_loc)
 
     if (!GetExitCodeProcess(child->hProcess, &exitcode)) {
 	/* If an error occurred, return immediately. */
-    error_exit:
 	err = GetLastError();
 	switch (err) {
 	  case ERROR_INVALID_PARAMETER:
@@ -4185,6 +4184,7 @@ poll_child_status(struct ChildRecord *child, int *stat_loc)
 	    errno = map_errno(err);
 	    break;
 	}
+    error_exit:
 	CloseChildHandle(child);
 	return -1;
     }