diff --git a/radio/src/boards/hw_defs/gx15.json b/radio/src/boards/hw_defs/gx15.json
index e9deaa095..6aea5621c 100644
--- a/radio/src/boards/hw_defs/gx15.json
+++ b/radio/src/boards/hw_defs/gx15.json
@@ -97,8 +97,8 @@
         "type": "FLEX",
         "adc": "MAIN",
         "gpio": "GPIOA",
-        "pin": "LL_GPIO_PIN_7",
-        "channel": "LL_ADC_CHANNEL_7",
+        "pin": "LL_GPIO_PIN_5",
+        "channel": "LL_ADC_CHANNEL_19",
         "inverted": true,
         "label": "RS",
         "short_label": "R",
@@ -109,8 +109,8 @@
         "type": "FLEX",
         "adc": "MAIN",
         "gpio": "GPIOA",
-        "pin": "LL_GPIO_PIN_5",
-        "channel": "LL_ADC_CHANNEL_19",
+        "pin": "LL_GPIO_PIN_7",
+        "channel": "LL_ADC_CHANNEL_7",
         "label": "EXT1",
         "short_label": "E1"
       },