diff --git a/library.json b/library.json
index f36e8f7..d0d7ac2 100644
--- a/library.json
+++ b/library.json
@@ -14,7 +14,7 @@
       "maintainer": true
     }
   ],
-  "version": "3.1.1",
+  "version": "3.1.2",
   "frameworks": ["arduino", "espidf"],
   "platforms": "espressif32"
 }
diff --git a/src/RmtDriver5.cpp b/src/RmtDriver5.cpp
index b25b028..52ec2c1 100644
--- a/src/RmtDriver5.cpp
+++ b/src/RmtDriver5.cpp
@@ -121,7 +121,7 @@ esp_err_t RmtDriver::init() {
 
 esp_err_t RmtDriver::registerIsr(bool isFirstRegisteredChannel) {
     rmt_tx_channel_config_t conf = {
-        .gpio_num = _pin,
+        .gpio_num = (gpio_num_t)_pin,
         .clk_src = RMT_CLK_SRC_APB,
         .resolution_hz = RMT_RESOLUTION_HZ,
         .mem_block_symbols = SOC_RMT_MEM_WORDS_PER_CHANNEL,