diff --git a/src/rtl_433.c b/src/rtl_433.c
index a21fc8af..72cbd23b 100644
--- a/src/rtl_433.c
+++ b/src/rtl_433.c
@@ -716,6 +716,8 @@ int main(int argc, char **argv)
         r = rtlsdr_set_tuner_gain_mode(dev, 0);
         if (r < 0)
             fprintf(stderr, "WARNING: Failed to enable automatic gain.\n");
+        else
+            fprintf(stderr, "Tuner gain set to Auto.\n");
     } else {
         /* Enable manual gain */
         r = rtlsdr_set_tuner_gain_mode(dev, 1);