diff --git a/allennlp/models/multitask.py b/allennlp/models/multitask.py
index 4f1b1f42f02..2dd14082ca4 100644
--- a/allennlp/models/multitask.py
+++ b/allennlp/models/multitask.py
@@ -29,7 +29,7 @@ class MultiTaskModel(Model):
     right arguments to the right modules, but we allow you to specify these arguments yourself in
     case our inference code gets it wrong.
 
-    It the caller's responsibility to make sure that the backbone and all heads are compatible with
+    It is the caller's responsibility to make sure that the backbone and all heads are compatible with
     each other, and with the input data that comes from a `MultiTaskDatasetReader`.  We give some
     arguments in this class and in `MultiTaskDatasetReader` to help with plumbing the arguments in
     complex cases (e.g., you can change argument names so that they match what the backbone and