diff --git a/exosphere/src/arm.s b/exosphere/src/arm.s
index 530c207..939a869 100644
--- a/exosphere/src/arm.s
+++ b/exosphere/src/arm.s
@@ -235,10 +235,10 @@
 .type       invalidate_icache_all, %function
 .global     invalidate_icache_all
 invalidate_icache_all:
-    dsb sy
+    dsb ish
     isb
     ic  iallu
-    dsb sy
+    dsb ish
     isb
     ret