2 files changed, 6 insertions, 6 deletions
diff --git a/nova/virt/libvirt/imagebackend.py b/nova/virt/libvirt/imagebackend.py
index 575ae262e..3d394fb79 100755
--- a/nova/virt/libvirt/imagebackend.py
+++ b/nova/virt/libvirt/imagebackend.py
@@ -175,13 +175,13 @@ class Image(object):
         return can_fallocate
 
     def snapshot_create(self):
-        raise NotImplementedError
+        raise NotImplementedError()
 
     def snapshot_extract(self, target, out_format):
-        raise NotImplementedError
+        raise NotImplementedError()
 
     def snapshot_delete(self):
-        raise NotImplementedError
+        raise NotImplementedError()
 
 
 class Raw(Image):
diff --git a/nova/virt/vmwareapi/read_write_util.py b/nova/virt/vmwareapi/read_write_util.py
index a87b3ed92..c82b96fd9 100644
--- a/nova/virt/vmwareapi/read_write_util.py
+++ b/nova/virt/vmwareapi/read_write_util.py
@@ -97,15 +97,15 @@ class VMwareHTTPFile(object):
 
     def write(self, data):
         """Write data to the file."""
-        raise NotImplementedError
+        raise NotImplementedError()
 
     def read(self, chunk_size):
         """Read a chunk of data."""
-        raise NotImplementedError
+        raise NotImplementedError()
 
     def get_size(self):
         """Get size of the file to be read."""
-        raise NotImplementedError
+        raise NotImplementedError()
 
 
 class VMwareHTTPWriteFile(VMwareHTTPFile):