diff --git a/escpos/escpos.py b/escpos/escpos.py
index df74fea..26ec590 100644
--- a/escpos/escpos.py
+++ b/escpos/escpos.py
@@ -159,12 +159,12 @@ class Escpos:
         if 1 <= height <= 255:
             self._raw(BARCODE_HEIGHT + chr(height))
         else:
-            raise BarcodeSizeError()
+            raise BarcodeSizeError("height = %s" % height)
         # Width
         if 2 <= width <= 6:
             self._raw(BARCODE_WIDTH + chr(width))
         else:
-            raise BarcodeSizeError()
+            raise BarcodeSizeError("width = %s" % width)
         # Font
         if font.upper() == "B":
             self._raw(BARCODE_FONT_B)
@@ -195,7 +195,7 @@ class Escpos:
         elif bc.upper() == "NW7":
             self._raw(BARCODE_NW7)
         else:
-            raise BarcodeTypeError()
+            raise BarcodeTypeError(bc)
         # Print Code
         if code:
             self._raw(code)
diff --git a/escpos/exceptions.py b/escpos/exceptions.py
index caad7a8..f9c7489 100644
--- a/escpos/exceptions.py
+++ b/escpos/exceptions.py
@@ -34,7 +34,7 @@ class BarcodeTypeError(Error):
         self.resultcode = 10
 
     def __str__(self):
-        return "No Barcode type is defined"
+        return "No Barcode type is defined (%s)" % self.msg
 
 class BarcodeSizeError(Error):
     def __init__(self, msg=""):
@@ -43,7 +43,7 @@ class BarcodeSizeError(Error):
         self.resultcode = 20
 
     def __str__(self):
-        return "Barcode size is out of range"
+        return "Barcode size is out of range (%s)" % self.msg
 
 class BarcodeCodeError(Error):
     def __init__(self, msg=""):