diff --git a/stm32-data-gen/src/rcc.rs b/stm32-data-gen/src/rcc.rs
index 8d489db..e0c4ebf 100644
--- a/stm32-data-gen/src/rcc.rs
+++ b/stm32-data-gen/src/rcc.rs
@@ -299,7 +299,7 @@ impl ParsedRccs {
             ("USART6", &["USART16910"]),
             ("USART10", &["USART16910"]),
             ("UART9", &["USART16910"]),
-            ("I2C1", &["I2C1235"]),
+            ("I2C1", &["I2C1235", "I2C1_I3C1"]),
             ("I2C2", &["I2C1235"]),
             ("I2C3", &["I2C1235"]),
             ("I2C5", &["I2C1235"]),