diff --git a/firmware/config/boards/hellen/hellen-nb1/knock_config.h b/firmware/config/boards/hellen/hellen-nb1/knock_config.h
index be15db88b1..c885793985 100644
--- a/firmware/config/boards/hellen/hellen-nb1/knock_config.h
+++ b/firmware/config/boards/hellen/hellen-nb1/knock_config.h
@@ -1,16 +1 @@
-/**
- * @file knock_config.h
- */
-
-#pragma once
-
-// Knock is on ADC3
-#define KNOCK_ADC ADCD3
-
-// knock 1 - pin PF7
-#define KNOCK_ADC_CH1 ADC_CHANNEL_IN5
-#define KNOCK_PIN_CH1 GPIOF_7
-
-// Sample rate & time - depends on the exact MCU
-#define KNOCK_SAMPLE_TIME ADC_SAMPLE_84
-#define KNOCK_SAMPLE_RATE (STM32_PCLK2 / (4 * (84 + 12)))
+#include "hellen_knock_config.h"
\ No newline at end of file
diff --git a/firmware/config/boards/hellen/hellen121nissan/knock_config.h b/firmware/config/boards/hellen/hellen121nissan/knock_config.h
index be15db88b1..c885793985 100644
--- a/firmware/config/boards/hellen/hellen121nissan/knock_config.h
+++ b/firmware/config/boards/hellen/hellen121nissan/knock_config.h
@@ -1,16 +1 @@
-/**
- * @file knock_config.h
- */
-
-#pragma once
-
-// Knock is on ADC3
-#define KNOCK_ADC ADCD3
-
-// knock 1 - pin PF7
-#define KNOCK_ADC_CH1 ADC_CHANNEL_IN5
-#define KNOCK_PIN_CH1 GPIOF_7
-
-// Sample rate & time - depends on the exact MCU
-#define KNOCK_SAMPLE_TIME ADC_SAMPLE_84
-#define KNOCK_SAMPLE_RATE (STM32_PCLK2 / (4 * (84 + 12)))
+#include "hellen_knock_config.h"
\ No newline at end of file
diff --git a/firmware/config/boards/hellen/hellen128/knock_config.h b/firmware/config/boards/hellen/hellen128/knock_config.h
index be15db88b1..c885793985 100644
--- a/firmware/config/boards/hellen/hellen128/knock_config.h
+++ b/firmware/config/boards/hellen/hellen128/knock_config.h
@@ -1,16 +1 @@
-/**
- * @file knock_config.h
- */
-
-#pragma once
-
-// Knock is on ADC3
-#define KNOCK_ADC ADCD3
-
-// knock 1 - pin PF7
-#define KNOCK_ADC_CH1 ADC_CHANNEL_IN5
-#define KNOCK_PIN_CH1 GPIOF_7
-
-// Sample rate & time - depends on the exact MCU
-#define KNOCK_SAMPLE_TIME ADC_SAMPLE_84
-#define KNOCK_SAMPLE_RATE (STM32_PCLK2 / (4 * (84 + 12)))
+#include "hellen_knock_config.h"
\ No newline at end of file
diff --git a/firmware/config/boards/hellen/hellen_knock_config.h b/firmware/config/boards/hellen/hellen_knock_config.h
new file mode 100644
index 0000000000..242e11fe18
--- /dev/null
+++ b/firmware/config/boards/hellen/hellen_knock_config.h
@@ -0,0 +1,16 @@
+/**
+ * @file hellen_knock_config.h
+ */
+
+#pragma once
+
+// Knock is on ADC3
+#define KNOCK_ADC ADCD3
+
+// knock 1 - pin PF7
+#define KNOCK_ADC_CH1 ADC_CHANNEL_IN5
+#define KNOCK_PIN_CH1 GPIOF_7
+
+// Sample rate & time - depends on the exact MCU
+#define KNOCK_SAMPLE_TIME ADC_SAMPLE_84
+#define KNOCK_SAMPLE_RATE (STM32_PCLK2 / (4 * (84 + 12)))