diff --git a/README.md b/README.md
index c0e3e05..4d78fd7 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ $ refurb file.py folder/
 ```
 
 > **Note**
-> Refurb must be ran on Python 3.10+, though it can check Python 3.6+ code by setting the `--python-version` flag.
+> Refurb must be ran on Python 3.10+, though it can check Python 3.7+ code by setting the `--python-version` flag.
 
 ## Explanations For Checks
 
diff --git a/docs/checks.md b/docs/checks.md
index a1148a4..c8a1846 100644
--- a/docs/checks.md
+++ b/docs/checks.md
@@ -2055,7 +2055,7 @@ cmd = shlex.join(args)
 
 Categories: `itertools` `performance` `readability`
 
-When flattening an list of lists, use the `chain.from_iterable` function
+When flattening a list of lists, use the `chain.from_iterable()` function
 from the `itertools` stdlib package. This function is faster than native
 list/generator comprehensions or using `sum()` with a list default.
 
@@ -2083,9 +2083,13 @@ from itertools import chain
 
 rows = [[1, 2], [3, 4]]
 
-flat = chain.from_iterable(*rows)
+flat = chain.from_iterable(rows)
 ```
 
+Note: `chain.from_iterable()` returns an iterator, which means you might
+need to wrap it in `list()` depending on your use case. Refurb cannot
+detect this (yet), so this is something you will need to keep in mind.
+
 Note: `chain(*x)` may be marginally faster/slower depending on the length
 of `x`. Since `*` might potentially expand to a lot of arguments, it is
 better to use `chain.from_iterable()` when you are unsure.
diff --git a/refurb/checks/itertools/use_chain_from_iterable.py b/refurb/checks/itertools/use_chain_from_iterable.py
index 4961c76..6fb6a5d 100644
--- a/refurb/checks/itertools/use_chain_from_iterable.py
+++ b/refurb/checks/itertools/use_chain_from_iterable.py
@@ -15,7 +15,7 @@
 @dataclass
 class ErrorInfo(Error):
     """
-    When flattening an list of lists, use the `chain.from_iterable` function
+    When flattening a list of lists, use the `chain.from_iterable()` function
     from the `itertools` stdlib package. This function is faster than native
     list/generator comprehensions or using `sum()` with a list default.
 
@@ -43,9 +43,13 @@ class ErrorInfo(Error):
 
     rows = [[1, 2], [3, 4]]
 
-    flat = chain.from_iterable(*rows)
+    flat = chain.from_iterable(rows)
     ```
 
+    Note: `chain.from_iterable()` returns an iterator, which means you might
+    need to wrap it in `list()` depending on your use case. Refurb cannot
+    detect this (yet), so this is something you will need to keep in mind.
+
     Note: `chain(*x)` may be marginally faster/slower depending on the length
     of `x`. Since `*` might potentially expand to a lot of arguments, it is
     better to use `chain.from_iterable()` when you are unsure.