diff --git a/include/config.h b/include/config.h
index 453e0fe..071e50e 100644
--- a/include/config.h
+++ b/include/config.h
@@ -49,9 +49,9 @@
 #define NUM_BUTTONS 4
 
 #define DEBOUNCE_MILLIS      200
-#define VOLUME_DEFAULT 0xA0
-#define VOLUME_MIN 0x60
-#define VOLUME_MAX 0xC0
+#define VOLUME_DEFAULT 230
+#define VOLUME_MIN 190
+#define VOLUME_MAX 255
 #define VOLUME_STEP 0x08
 
 #define RFID_SCAN_INTERVAL 100