diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 51b511611..3ad68f67a 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,7 @@
+2012-03-21  Christopher Faylor  <me.cygwin2012@cgf.cx>
+
+	* child_info.h: Reset magic number.
+
 2012-03-21  Christopher Faylor  <me.cygwin2012@cgf.cx>
 
 	* child_info.h (child_info::postfork): Define new function.
diff --git a/winsup/cygwin/child_info.h b/winsup/cygwin/child_info.h
index cfe1e46fc..36aac8ed1 100644
--- a/winsup/cygwin/child_info.h
+++ b/winsup/cygwin/child_info.h
@@ -35,7 +35,7 @@ enum child_status
 #define EXEC_MAGIC_SIZE sizeof(child_info)
 
 /* Change this value if you get a message indicating that it is out-of-sync. */
-#define CURR_CHILD_INFO_MAGIC 0x10f103a4U
+#define CURR_CHILD_INFO_MAGIC 0xca644850U
 
 #define NPROCS	256