diff --git a/examples/mraa-gpio.c b/examples/mraa-gpio.c
index 347d01b..55c240e 100644
--- a/examples/mraa-gpio.c
+++ b/examples/mraa-gpio.c
@@ -116,7 +116,7 @@ gpio_get(int pin, int* level, mraa_boolean_t raw)
         if (raw != 0) {
             if (mraa_gpio_use_mmaped(gpio, 1) != MRAA_SUCCESS) {
                 fprintf(stdout,
-                        "mmapped access to gpio not supported, falling back to normal mode\n", pin);
+                        "mmapped access to gpio %d not supported, falling back to normal mode\n", pin);
             }
         }
         *level = mraa_gpio_read(gpio);