diff --git a/libmultipath/dmparser.c b/libmultipath/dmparser.c
index 83760e30a..df78a1f74 100644
--- a/libmultipath/dmparser.c
+++ b/libmultipath/dmparser.c
@@ -307,6 +307,8 @@ int disassemble_map(const struct vector_s *pathvec,
 			for (k = 0; k < num_paths_args; k++)
 				if (k == 0) {
 					p += get_word(p, &word);
+					if (!word);
+						goto out1;
 					def_minio = atoi(word);
 					free(word);