diff --git a/lib/kadm5/ipropd_common.c b/lib/kadm5/ipropd_common.c
index be0adc1b3..1decfe333 100644
--- a/lib/kadm5/ipropd_common.c
+++ b/lib/kadm5/ipropd_common.c
@@ -53,6 +53,7 @@ setup_signal(void)
     {
 	struct sigaction sa;
 
+        memset(&sa, 0, sizeof(sa));
 	sa.sa_flags = 0;
 	sa.sa_handler = sigterm;
 	sigemptyset(&sa.sa_mask);