diff --git a/src/kernel/process.c b/src/kernel/process.c
index c149cdd..f840299 100644
--- a/src/kernel/process.c
+++ b/src/kernel/process.c
@@ -262,10 +262,14 @@ void destroy_process(struct process *process) {
     if (process->p3_virtual_base[p3i]) {
       for (int p2i = 0; p2i < 512; ++p2i)
         if (process->p2_virtual_bases[p3i][p2i]) {
-          for (int p1i = 0; p1i < 512; ++p1i)
-            mark_physical_memory_free(
-              process->p1_virtual_bases[p3i][p2i][p1i] & 0x7ffffffffffff000,
-              4096);
+          for (int p1i = 0; p1i < 512; ++p1i) {
+            uint64_t pma =
+              process->p1_virtual_bases[p3i][p2i][p1i] & 0x7ffffffffffff000;
+            if (pma >= fb_physical_base &&
+                pma < fb_physical_base + fb_pitch * fb_height)
+              continue;
+            mark_physical_memory_free(pma, 4096);
+          }
           unmap_and_free_kernel_page(process->p1_virtual_bases[p3i][p2i]);
         }
       unmap_and_free_kernel_page(process->p2_virtual_bases[p3i]);