diff --git a/e2fsck/sigcatcher.c b/e2fsck/sigcatcher.c
index 45571ca6..83f912de 100644
--- a/e2fsck/sigcatcher.c
+++ b/e2fsck/sigcatcher.c
@@ -218,6 +218,7 @@ void sigcatcher_setup(void)
 {
 	struct sigaction	sa;
 	
+	memset(&sa, 0, sizeof(struct sigaction));
 	sa.sa_sigaction = die_signal_handler;
 	sa.sa_flags = SA_SIGINFO;