diff --git a/data/registers/rcc_h5.yaml b/data/registers/rcc_h5.yaml
index f528211..2bae245 100644
--- a/data/registers/rcc_h5.yaml
+++ b/data/registers/rcc_h5.yaml
@@ -2440,7 +2440,7 @@ enum/OCTOSPISEL:
   - name: PLL2_R
     description: pll2_r_ck selected as kernel clock
     value: 2
-  - name: PER_CLK
+  - name: PER
     description: per_ck selected as kernel clock
     value: 3
 enum/PLLDIV:
diff --git a/stm32-data-gen/src/rcc.rs b/stm32-data-gen/src/rcc.rs
index 171d25f..86a6467 100644
--- a/stm32-data-gen/src/rcc.rs
+++ b/stm32-data-gen/src/rcc.rs
@@ -26,6 +26,7 @@ impl PeripheralToClock {
                     "HSI_KER",
                     "CSI_KER",
                     "LSI_KER",
+                    "PER_CLK",
                 ]);
 
                 let rcc_enum_map: HashMap<&String, HashMap<&String, &Enum>> = {
diff --git a/stm32-metapac-gen/src/data.rs b/stm32-metapac-gen/src/data.rs
index 74d6d2e..26d6983 100644
--- a/stm32-metapac-gen/src/data.rs
+++ b/stm32-metapac-gen/src/data.rs
@@ -16,7 +16,7 @@ pub mod ir {
                 .blocks
                 .iter()
                 .map(|(name, block)| {
-                    let mut items: Vec<_> = block
+                    let items = block
                         .items
                         .iter()
                         .map(|item| BlockItem {
@@ -54,8 +54,6 @@ pub mod ir {
                         })
                         .collect();
 
-                    items.sort_by_key(|i| i.name.clone());
-
                     Block {
                         name: name.to_string(),
                         items: items,