diff --git a/sys/cddl/dev/dtrace/dtrace_ioctl.c b/sys/cddl/dev/dtrace/dtrace_ioctl.c
index fbc891d444f6..6a01e132ed54 100644
--- a/sys/cddl/dev/dtrace/dtrace_ioctl.c
+++ b/sys/cddl/dev/dtrace/dtrace_ioctl.c
@@ -215,7 +215,7 @@ dtrace_ioctl(struct cdev *dev, u_long cmd, caddr_t addr,
 		    "DTRACEIOC_AGGSNAP":"DTRACEIOC_BUFSNAP",
 		    curcpu, desc.dtbd_cpu);
 
-		if (desc.dtbd_cpu < 0 || desc.dtbd_cpu >= NCPU)
+		if (desc.dtbd_cpu >= NCPU)
 			return (ENOENT);
 		if (pcpu_find(desc.dtbd_cpu) == NULL)
 			return (ENOENT);