diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 91bd385a..bcb096b3 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -50,6 +50,9 @@ firmware/targets/f4/api-hal/api-hal-vcp.c @skotopes
 firmware/targets/f4/api-hal/api-hal.c @DrZlo13
 firmware/targets/f4/api-hal/api-interrupts.c @DrZlo13
 
+firmware/targets/f4/Src/i2c.c @skotopes
+firmware/targets/f5/Src/i2c.c @skotopes
+
 # BLE
 
 firmware/targets/f4/ble-glue/** @skotopes
diff --git a/firmware/targets/f4/Src/i2c.c b/firmware/targets/f4/Src/i2c.c
index 3f2b619e..badd682f 100644
--- a/firmware/targets/f4/Src/i2c.c
+++ b/firmware/targets/f4/Src/i2c.c
@@ -75,8 +75,8 @@ void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
     */
     GPIO_InitStruct.Pin = I2C_SCL_Pin|I2C_SDA_Pin;
     GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
-    GPIO_InitStruct.Pull = GPIO_PULLUP;
-    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
     GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
     HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
diff --git a/firmware/targets/f5/Src/i2c.c b/firmware/targets/f5/Src/i2c.c
index 3f2b619e..badd682f 100644
--- a/firmware/targets/f5/Src/i2c.c
+++ b/firmware/targets/f5/Src/i2c.c
@@ -75,8 +75,8 @@ void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
     */
     GPIO_InitStruct.Pin = I2C_SCL_Pin|I2C_SDA_Pin;
     GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
-    GPIO_InitStruct.Pull = GPIO_PULLUP;
-    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
     GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
     HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);