diff --git a/main/esp32-lora.c b/main/esp32-lora.c
index 8726ed3..7eaa9a9 100644
--- a/main/esp32-lora.c
+++ b/main/esp32-lora.c
@@ -255,13 +255,13 @@ void lora32_enable_cad(lora32_cfg_t *lora) {
   lora32_write_reg(lora, REG_OP_MODE, MODE_LONG_RANGE_MODE | MODE_CAD_DETECT);
 }
 
-void lora32_set_coding_rate(lora32_cfg_t *lora, uint8_t d) {
-  if(d < 5) d = 5;
-  else if(d > 8) d = 8;
+void lora32_set_coding_rate(lora32_cfg_t *lora, uint8_t cr) {
+  if(cr < 5) cr = 5;
+  else if(cr > 8) cr = 8;
 
-  uint8_t cr = d  - 4;
+  cr = cr  - 4;
 
-  ESP_LOGI(TAG, "lora32_set_coding_rate: %d", factor);
+  ESP_LOGI(TAG, "lora32_set_coding_rate: %d", cr + 4);
 
   lora32_write_reg(lora, REG_MODEM_CONFIG_1, (lora32_read_reg(lora, REG_MODEM_CONFIG_1) & 0xF1) | (cr << 1));
 }