diff --git a/lib/bacnet-asn1.js b/lib/bacnet-asn1.js
index 4972fa8a..6de8805e 100644
--- a/lib/bacnet-asn1.js
+++ b/lib/bacnet-asn1.js
@@ -1189,7 +1189,6 @@ var bacapp_decode_data = function(buffer, offset, maxLength, tagDataType, lenVal
       break;
     case baEnum.BacnetApplicationTags.BACNET_APPLICATION_TAG_BOOLEAN:
       value.value = lenValueType > 0 ? true : false;
-      value.len += lenValueType;
       break;
     case baEnum.BacnetApplicationTags.BACNET_APPLICATION_TAG_UNSIGNED_INT:
       result = decode_unsigned(buffer, offset, lenValueType);