diff --git a/version.txt b/version.txt
index cc6612c..a625450 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-2.3.0
\ No newline at end of file
+2.3.1
\ No newline at end of file
diff --git a/zh_pcf8574.c b/zh_pcf8574.c
index af50f78..4467383 100755
--- a/zh_pcf8574.c
+++ b/zh_pcf8574.c
@@ -99,7 +99,7 @@ esp_err_t zh_pcf8574_deinit(zh_pcf8574_handle_t *handle)
             gpio_isr_handler_remove((gpio_num_t)_interrupt_gpio);
             gpio_reset_pin((gpio_num_t)_interrupt_gpio);
             zh_vector_free(&_vector);
-            if (_is_prev_gpio_isr_service == true)
+            if (_is_prev_gpio_isr_service == false)
             {
                 gpio_uninstall_isr_service();
             }