--- a/libxfs/libxfs_priv.h
+++ b/libxfs/libxfs_priv.h
@@ -89,9 +89,6 @@ struct iomap;
 /* for all the support code that uses progname in error messages */
 extern char    *progname;
 
-#undef ASSERT
-#define ASSERT(ex) assert(ex)
-
 /*
  * We have no need for the "linux" dev_t in userspace, so these
  * are no-ops, and an xfs_dev_t is stored in VFS_I(ip)->i_rdev
