diff --git a/sections/cper-section-arm.c b/sections/cper-section-arm.c
index 5a91235..c52da3e 100644
--- a/sections/cper-section-arm.c
+++ b/sections/cper-section-arm.c
@@ -214,7 +214,7 @@
     json_object* bus_error_ir = json_object_new_object();
 
     //Validation bits.
-    json_object* validation = bitfield_to_ir(bus_error->ValidationBits, 7, ARM_BUS_ERROR_VALID_BITFIELD_NAMES);
+    json_object* validation = bitfield_to_ir(bus_error->ValidationBits, 12, ARM_BUS_ERROR_VALID_BITFIELD_NAMES);
     json_object_object_add(bus_error_ir, "validationBits", validation);
 
     //Transaction type.