diff --git a/libcortex_a9/src/mmu.rs b/libcortex_a9/src/mmu.rs
index a039d15..a744b5f 100644
--- a/libcortex_a9/src/mmu.rs
+++ b/libcortex_a9/src/mmu.rs
@@ -368,6 +368,7 @@ impl L1Table {
         let result = f(&mut section);
         entry.set_section(section);
 
+        asm::dmb();
         cache::tlbiall();
         asm::dsb();
         asm::isb();