diff --git a/data/registers/pka_v1b.yaml b/data/registers/pka_v1b.yaml
index bebc11a..51a1b24 100644
--- a/data/registers/pka_v1b.yaml
+++ b/data/registers/pka_v1b.yaml
@@ -70,11 +70,6 @@ fieldset/SR:
     description: PKA initialization OK This bit is asserted when PKA initialization is complete. When RNG is not able to output proper random numbers INITOK stays at 0.
     bit_offset: 0
     bit_size: 1
-  - name: LMF
-    description: Limited mode flag This bit is updated when EN bit in PKA_CR is set.
-    bit_offset: 1
-    bit_size: 1
-    enum: LMF
   - name: BUSY
     description: PKA operation is in progress This bit is set to 1 whenever START bit in the PKA_CR is set. It is automatically cleared when the computation is complete, meaning that PKA RAM can be safely accessed and a new operation can be started. If PKA is started with a wrong opcode, it is busy for a couple of cycles, then it aborts automatically the operation and go back to ready (BUSY bit is set to 0).
     bit_offset: 16
@@ -95,12 +90,3 @@ fieldset/SR:
     description: Operation error flag This bit is cleared using OPERRFC bit in PKA_CLRFR.
     bit_offset: 21
     bit_size: 1
-enum/LMF:
-  bit_size: 1
-  variants:
-  - name: All
-    description: All values documented in MODE bitfield can be used.
-    value: 0
-  - name: Limited
-    description: Only ECDSA verification (MODE = 0x26) is supported by the PKA.
-    value: 1