diff --git a/include/os/freebsd/spl/sys/ccompile.h b/include/os/freebsd/spl/sys/ccompile.h
index 9970443103..23e6379834 100644
--- a/include/os/freebsd/spl/sys/ccompile.h
+++ b/include/os/freebsd/spl/sys/ccompile.h
@@ -36,12 +36,6 @@
 extern "C" {
 #endif
 
-#if	defined(_KERNEL) || defined(_STANDALONE)
-#define	__NORETURN		__sun_attr__((__noreturn__))
-#endif /* _KERNEL || _STANDALONE */
-#define	__CONST			__sun_attr__((__const__))
-#define	__PURE			__sun_attr__((__pure__))
-
 #if defined(INVARIANTS) && !defined(ZFS_DEBUG)
 #define	ZFS_DEBUG
 #undef 	NDEBUG
diff --git a/include/os/freebsd/spl/sys/cmn_err.h b/include/os/freebsd/spl/sys/cmn_err.h
index bf41ecdb28..ddc2f0049e 100644
--- a/include/os/freebsd/spl/sys/cmn_err.h
+++ b/include/os/freebsd/spl/sys/cmn_err.h
@@ -71,7 +71,7 @@ extern void vuprintf(const char *, __va_list)
     __attribute__((format(printf, 1, 0)));
 
 extern void panic(const char *, ...)
-    __attribute__((format(printf, 1, 2))) __NORETURN;
+    __attribute__((format(printf, 1, 2)));
 
 #endif /* !_ASM */