diff --git a/sys/kern/kern_timeout.c b/sys/kern/kern_timeout.c
--- a/sys/kern/kern_timeout.c
+++ b/sys/kern/kern_timeout.c
@@ -1309,7 +1309,7 @@
 				cc_exec_drain(cc, direct) = drain;
 			}
 			CC_UNLOCK(cc);
-			return ((flags & CS_EXECUTING) != 0);
+			return (0);
 		} else {
 			CTR3(KTR_CALLOUT, "failed to stop %p func %p arg %p",
 			    c, c->c_func, c->c_arg);
@@ -1321,7 +1321,7 @@
 			}
 		}
 		KASSERT(!sq_locked, ("sleepqueue chain still locked"));
-		cancelled = ((flags & CS_EXECUTING) != 0);
+		cancelled = 0;
 	} else
 		cancelled = 1;
 
diff --git a/sys/sys/callout.h b/sys/sys/callout.h
--- a/sys/sys/callout.h
+++ b/sys/sys/callout.h
@@ -64,8 +64,6 @@
 
 /* Flags for callout_stop_safe() */
 #define	CS_DRAIN		0x0001 /* callout_drain(), wait allowed */
-#define	CS_EXECUTING		0x0002 /* Positive return value indicates that
-					  the callout was executing */
 
 #ifdef _KERNEL
 /*