diff --git a/doc/fsl.utils.async.rst b/doc/fsl.utils.async.rst
deleted file mode 100644
index f0388cf91b2ef36542ef0ed90bb693516ce2ec52..0000000000000000000000000000000000000000
--- a/doc/fsl.utils.async.rst
+++ /dev/null
@@ -1,7 +0,0 @@
-``fsl.utils.async``
-===================
-
-.. automodule:: fsl.utils.async
-    :members:
-    :undoc-members:
-    :show-inheritance:
diff --git a/doc/fsl.utils.idle.rst b/doc/fsl.utils.idle.rst
new file mode 100644
index 0000000000000000000000000000000000000000..5fba9354a3519130e574687060f7b0d98cd05dfc
--- /dev/null
+++ b/doc/fsl.utils.idle.rst
@@ -0,0 +1,7 @@
+``fsl.utils.idle``
+==================
+
+.. automodule:: fsl.utils.idle
+    :members:
+    :undoc-members:
+    :show-inheritance:
diff --git a/doc/fsl.utils.rst b/doc/fsl.utils.rst
index 0784b93693b8be33593898f82f0e8c41ec774c71..157578850d311d9eed8e239e840a303b60fba645 100644
--- a/doc/fsl.utils.rst
+++ b/doc/fsl.utils.rst
@@ -4,9 +4,9 @@
 .. toctree::
    :hidden:
 
-   fsl.utils.async
    fsl.utils.cache
    fsl.utils.callfsl
+   fsl.utils.idle
    fsl.utils.imcp
    fsl.utils.memoize
    fsl.utils.notifier