diff --git a/sys/arm64/arm64/pmap.c b/sys/arm64/arm64/pmap.c
--- a/sys/arm64/arm64/pmap.c
+++ b/sys/arm64/arm64/pmap.c
@@ -2448,16 +2448,11 @@
  * page management routines.
  ***************************************************/
 
-static const uint64_t pc_freemask[] = { PC_FREEN, PC_FREEN,
-#if _NPCM > 3
-    PC_FREEN, PC_FREEN, PC_FREEN, PC_FREEN, PC_FREEN, PC_FREEN, PC_FREEN,
-    PC_FREEN,
-#endif
-    PC_FREEL
+static const uint64_t pc_freemask[_NPCM] = {
+	[0 ... _NPCM - 2] = PC_FREEN,
+	[_NPCM - 1] = PC_FREEL
 };
 
-CTASSERT(nitems(pc_freemask) == _NPCM);
-
 #ifdef PV_STATS
 static int pc_chunk_count, pc_chunk_allocs, pc_chunk_frees, pc_chunk_tryfail;