diff --git a/kernel/kexec_handover.c b/kernel/kexec_handover.c
index 36fdce2667c5..e0bafe7c0ded 100644
--- a/kernel/kexec_handover.c
+++ b/kernel/kexec_handover.c
@@ -882,7 +882,8 @@ static struct kho_vmalloc_chunk *new_vmalloc_chunk(struct kho_vmalloc_chunk *cur
 	return NULL;
 }
 
-static void kho_vmalloc_unpreserve_chunk(struct kho_vmalloc_chunk *chunk)
+static void kho_vmalloc_unpreserve_chunk(struct kho_vmalloc_chunk *chunk,
+					 unsigned short order)
 {
 	struct kho_mem_track *track = &kho_out.ser.track;
 	unsigned long pfn = PHYS_PFN(virt_to_phys(chunk));
@@ -891,7 +892,7 @@ static void kho_vmalloc_unpreserve_chunk(struct kho_vmalloc_chunk *chunk)
 
 	for (int i = 0; i < ARRAY_SIZE(chunk->phys) && chunk->phys[i]; i++) {
 		pfn = PHYS_PFN(chunk->phys[i]);
-		__kho_unpreserve(track, pfn, pfn + 1);
+		__kho_unpreserve(track, pfn, pfn + (1 << order));
 	}
 }
 
@@ -902,7 +903,7 @@ static void kho_vmalloc_free_chunks(struct kho_vmalloc *kho_vmalloc)
 	while (chunk) {
 		struct kho_vmalloc_chunk *tmp = chunk;
 
-		kho_vmalloc_unpreserve_chunk(chunk);
+		kho_vmalloc_unpreserve_chunk(chunk, kho_vmalloc->order);
 
 		chunk = KHOSER_LOAD_PTR(chunk->hdr.next);
 		free_page((unsigned long)tmp);