diff --git a/sys/powerpc/aim/mmu_oea64.c b/sys/powerpc/aim/mmu_oea64.c
index f389db6a212..530988021f4 100644
--- a/sys/powerpc/aim/mmu_oea64.c
+++ b/sys/powerpc/aim/mmu_oea64.c
@@ -916,7 +916,8 @@ moea64_mid_bootstrap(mmu_t mmup, vm_offset_t kernelstart, vm_offset_t kernelend)
 	 */
 	mtx_init(&moea64_slb_mutex, "SLB table", NULL, MTX_DEF);
 	for (i = 0; i < PV_LOCK_COUNT; i++)
-		mtx_init(&pv_lock[i], "page pv", NULL, MTX_DEF);
+		mtx_init(&pv_lock[i], "page pv", NULL,
+		    MTX_DEF | MTX_NOWITNESS);
 
 	/*
 	 * Initialise the bootstrap pvo pool.