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diff --git a/firmware/drivers/generic_i2c.c b/firmware/drivers/generic_i2c.c
index 31a6e58..a4f9a2f 100644
--- a/firmware/drivers/generic_i2c.c
+++ b/firmware/drivers/generic_i2c.c
@@ -217,6 +217,7 @@ int i2c_add_node(const struct i2c_interface *iface)
     i2c_if[bus_index] = iface;

     iface->scl_output();
+    iface->delay_thigh();

     return bus_index;
 }
diff --git a/firmware/drivers/tuner/si4700.c b/firmware/drivers/tuner/si4700.c
index 1e2c188..9d1a588 100644
--- a/firmware/drivers/tuner/si4700.c
+++ b/firmware/drivers/tuner/si4700.c
@@ -298,6 +298,8 @@ void si4700_init(void)
         /* enable the internal oscillator */
         si4700_write_set(TEST1, TEST1_XOSCEN);
         sleep(HZ/2);
+        sleep(HZ/2);
+        sleep(HZ/2);
 #endif    
     }