diff --git a/b2sdk/v2/exception.py b/b2sdk/v2/exception.py
index 359af31c1..fad9437ea 100644
--- a/b2sdk/v2/exception.py
+++ b/b2sdk/v2/exception.py
@@ -23,4 +23,4 @@ def __init__(self, bucket_id):
         self.code = 'bad_bucket_id'
 
     def __str__(self):
-        return super(BadRequest, self).__str__()
+        return BadRequest.__str__(self)
diff --git a/changelog.d/+fix_str_of_v2_BucketIdNotFound.fixed.md b/changelog.d/+fix_str_of_v2_BucketIdNotFound.fixed.md
new file mode 100644
index 000000000..38ccd2da0
--- /dev/null
+++ b/changelog.d/+fix_str_of_v2_BucketIdNotFound.fixed.md
@@ -0,0 +1 @@
+Fix `__str__` of `b2sdk.v2.BucketIdNotFound` to return full error message and not just missing bucket ID value.
diff --git a/test/unit/b2http/test_b2http.py b/test/unit/b2http/test_b2http.py
index 9d5bff5f5..f8f7602c8 100644
--- a/test/unit/b2http/test_b2http.py
+++ b/test/unit/b2http/test_b2http.py
@@ -139,9 +139,11 @@ def test_bucket_id_not_found(self):
         def fcn():
             raise v3BucketIdNotFound('bucket_id')
 
-        with pytest.raises(BucketIdNotFound):
+        with pytest.raises(BucketIdNotFound) as exc_info:
             B2Http._translate_errors(fcn)
 
+        assert str(exc_info.value) == 'Bucket with id=bucket_id not found (bad_bucket_id)'
+
 
 def test_b2_error__nginx_html():
     """