diff --git a/util.py b/util.py
index aa80c06..d454daa 100644
--- a/util.py
+++ b/util.py
@@ -83,7 +83,7 @@ def test_read_write_reg(spi, dbg=False):
     write_reg(spi, FIFOTHR, test_value)
     check = read_register(spi, FIFOTHR)
     write_reg(spi, FIFOTHR, initial_val)
-    if(check != test_value):
+    if((check != test_value) or dbg):
         print("initial value ", initial_val)
         print("test value ", test_value)
         print("check ",check)