diff --git a/fs/Vfat.cpp b/fs/Vfat.cpp
index 7b833d1..14c42d6 100644
--- a/fs/Vfat.cpp
+++ b/fs/Vfat.cpp
@@ -67,7 +67,7 @@
         cmd.push_back(source);
 
         // Fat devices are currently always untrusted
-        rc = ForkExecvp(cmd, sFsckUntrustedContext);
+        rc = ForkExecvp(cmd, nullptr, sFsckUntrustedContext);
 
         if (rc < 0) {
             LOG(ERROR) << "Filesystem check failed due to logwrap error";