diff --git a/sys/sys/sysctl.h b/sys/sys/sysctl.h
index 40e384c2adc..98e8d32aed0 100644
--- a/sys/sys/sysctl.h
+++ b/sys/sys/sysctl.h
@@ -52,7 +52,7 @@ struct thread;
  * respective subsystem header files.
  */
 
-#define CTL_MAXNAME	12	/* largest number of components supported */
+#define CTL_MAXNAME	24	/* largest number of components supported */
 
 /*
  * Each subsystem defined by sysctl defines a list of variables