diff --git a/data/registers/syscfg_wb55.yaml b/data/registers/syscfg_wb55.yaml
index 5d18269..d25c0ef 100644
--- a/data/registers/syscfg_wb55.yaml
+++ b/data/registers/syscfg_wb55.yaml
@@ -42,23 +42,23 @@ block/SYSCFG:
       fieldset: SWPR2
     - name: IMR1
       description: CPU1 interrupt mask register 1
-      byte_offset: 44
+      byte_offset: 256
       fieldset: IMR1
     - name: IMR2
       description: CPU1 interrupt mask register 2
-      byte_offset: 48
+      byte_offset: 260
       fieldset: IMR2
     - name: C2IMR1
       description: CPU2 interrupt mask register 1
-      byte_offset: 52
+      byte_offset: 264
       fieldset: C2IMR1
     - name: C2IMR2
       description: CPU2 interrupt mask register 1
-      byte_offset: 56
+      byte_offset: 268
       fieldset: C2IMR2
     - name: SIPCR
       description: secure IP control register
-      byte_offset: 60
+      byte_offset: 272
       fieldset: SIPCR
 fieldset/C2IMR1:
   description: CPU2 interrupt mask register 1