diff --git a/main.cpp b/main.cpp
index 687a0a9..accaa01 100644
--- a/main.cpp
+++ b/main.cpp
@@ -152,6 +152,7 @@
         {"blkid_untrusted_context", required_argument, 0, 'B'},
         {"fsck_context", required_argument, 0, 'f'},
         {"fsck_untrusted_context", required_argument, 0, 'F'},
+        {nullptr, 0, nullptr, 0},
     };
 
     int c;