diff --git a/fs_mgr/liblp/builder.cpp b/fs_mgr/liblp/builder.cpp
index 421f4e6..720590d 100644
--- a/fs_mgr/liblp/builder.cpp
+++ b/fs_mgr/liblp/builder.cpp
@@ -54,6 +54,8 @@
     }
     return true;
 #else
+    (void)block_device;
+    (void)device_info;
     LERROR << __PRETTY_FUNCTION__ << ": Not supported on this operating system.";
     return false;
 #endif