diff --git a/firmware/export/system.h b/firmware/export/system.h
index 84c222e171..60febf3e16 100644
--- a/firmware/export/system.h
+++ b/firmware/export/system.h
@@ -182,7 +182,9 @@ static inline unsigned long SWAB32(unsigned long value)
 
 static inline void invalidate_icache(void)
 {
-   asm volatile ("move.l #0x81000000,%d0\n"
+   asm volatile ("move.l #0x01000000,%d0\n"
+		 "movec.l %d0,%cacr\n"
+                 "move.l #0x80000000,%d0\n"
 		 "movec.l %d0,%cacr");
 }