diff --git a/lib/rsa/rsa-verify.c b/lib/rsa/rsa-verify.c
index b74aaf8..4a0418a 100644
--- a/lib/rsa/rsa-verify.c
+++ b/lib/rsa/rsa-verify.c
@@ -449,6 +449,11 @@
 	}
 
 	algo = fdt_getprop(blob, node, "algo", NULL);
+	if (!algo) {
+		debug("%s: Missing 'algo' property\n", __func__);
+		return -EFAULT;
+	}
+
 	if (strcmp(info->name, algo)) {
 		debug("%s: Wrong algo: have %s, expected %s\n", __func__,
 		      info->name, algo);