diff --git a/plat/msdos86/libsys/kill.c b/plat/msdos86/libsys/kill.c
new file mode 100644
index 000000000..4a179c47c
--- /dev/null
+++ b/plat/msdos86/libsys/kill.c
@@ -0,0 +1,14 @@
+/* $Source$
+ * $State$
+ * $Revision$
+ */
+
+#include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+
+int kill(pid_t pid, int sig)
+{
+	errno = EINVAL;
+	return -1;
+}
diff --git a/plat/msdos86/libsys/signal.c b/plat/msdos86/libsys/signal.c
new file mode 100644
index 000000000..a87b9ced2
--- /dev/null
+++ b/plat/msdos86/libsys/signal.c
@@ -0,0 +1,15 @@
+/* $Source$
+ * $State$
+ * $Revision$
+ */
+
+#include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+#include <signal.h>
+#include "libsys.h"
+
+sighandler_t signal(int signum, sighandler_t handler)
+{
+	return SIG_DFL;
+}