diff --git a/lib/libkvm/kvm_proc.c b/lib/libkvm/kvm_proc.c
index 8305b338b4f1..1693b3d39c66 100644
--- a/lib/libkvm/kvm_proc.c
+++ b/lib/libkvm/kvm_proc.c
@@ -328,7 +328,7 @@ kvm_proclist(kd, what, arg, p, bp, maxcnt)
 		kp->ki_runtime = (u_int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
 		kp->ki_pid = proc.p_pid;
 		kp->ki_siglist = proc.p_siglist;
-		SIGANDSET(kp->ki_siglist, mtd.td_siglist);
+		SIGSETOR(kp->ki_siglist, mtd.td_siglist);
 		kp->ki_sigmask = mtd.td_sigmask;
 		kp->ki_xstat = proc.p_xstat;
 		kp->ki_acflag = proc.p_acflag;