diff --git a/headers/private/kernel/arch/arm/arch_int.h b/headers/private/kernel/arch/arm/arch_int.h
index 161e01d1b7..cfff74f729 100644
--- a/headers/private/kernel/arch/arm/arch_int.h
+++ b/headers/private/kernel/arch/arm/arch_int.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2005-2009, Haiku Inc. All rights reserved.
+ * Copyright 2005-2022, Haiku Inc. All rights reserved.
  * Distributed under the terms of the MIT License.
  *
  * Authors:
@@ -12,6 +12,6 @@
 
 #include <SupportDefs.h>
 
-#define NUM_IO_VECTORS	256
+#define NUM_IO_VECTORS	1024
 
 #endif /* _KERNEL_ARCH_ARM_INT_H */