diff --git a/src/main/drivers/bus_i2c_hal_init.c b/src/main/drivers/bus_i2c_hal_init.c
index 5b2137b270..71871fdb20 100644
--- a/src/main/drivers/bus_i2c_hal_init.c
+++ b/src/main/drivers/bus_i2c_hal_init.c
@@ -287,16 +287,13 @@ void i2cInit(I2CDevice device)
     i2cDevice_t *pDev = &i2cDevice[device];
 
     const i2cHardware_t *hardware = pDev->hardware;
+    const IO_t scl = pDev->scl;
+    const IO_t sda = pDev->sda;
 
-    if (!hardware) {
+    if (!hardware || IOGetOwner(scl) || IOGetOwner(sda)) {
         return;
     }
 
-    IO_t scl = pDev->scl;
-    IO_t sda = pDev->sda;
-
-    RCC_ClockCmd(hardware->rcc, ENABLE);
-
     IOInit(scl, OWNER_I2C_SCL, RESOURCE_INDEX(device));
     IOInit(sda, OWNER_I2C_SDA, RESOURCE_INDEX(device));
 
diff --git a/src/main/drivers/bus_i2c_stm32f10x.c b/src/main/drivers/bus_i2c_stm32f10x.c
index 16b83f9519..673617474f 100644
--- a/src/main/drivers/bus_i2c_stm32f10x.c
+++ b/src/main/drivers/bus_i2c_stm32f10x.c
@@ -435,8 +435,10 @@ void i2cInit(I2CDevice device)
 
     i2cDevice_t *pDev = &i2cDevice[device];
     const i2cHardware_t *hw = pDev->hardware;
+    const IO_t scl = pDev->scl;
+    const IO_t sda = pDev->sda;
 
-    if (!hw) {
+    if (!hw || IOGetOwner(scl) || IOGetOwner(sda)) {
         return;
     }
 
@@ -447,9 +449,6 @@ void i2cInit(I2CDevice device)
     NVIC_InitTypeDef nvic;
     I2C_InitTypeDef i2cInit;
 
-    IO_t scl = pDev->scl;
-    IO_t sda = pDev->sda;
-
     IOInit(scl, OWNER_I2C_SCL, RESOURCE_INDEX(device));
     IOInit(sda, OWNER_I2C_SDA, RESOURCE_INDEX(device));