diff --git a/include/ac/signal.h b/include/ac/signal.h
index a18c147a1c..b850e75894 100644
--- a/include/ac/signal.h
+++ b/include/ac/signal.h
@@ -36,9 +36,9 @@
 #		if defined( SIGUNUSED )
 #			define LDAP_SIGUSR2	SIGUNUSED
 #		elif defined ( SIGINFO )
-#			define LDAP_SIGUSR1	SIGINFO
+#			define LDAP_SIGUSR2	SIGINFO
 #		elif defined ( SIGEMT )
-#			define LDAP_SIGUSR1	SIGEMT
+#			define LDAP_SIGUSR2	SIGEMT
 #		endif
 #	endif
 #endif