diff --git a/README.md b/README.md
index 9ce4d0f..a8447e0 100644
--- a/README.md
+++ b/README.md
@@ -1393,7 +1393,7 @@ BaseException
       |    +-- ZeroDivisionError  # Raised when dividing by zero.
       +-- AttributeError          # Raised when an attribute is missing.
       +-- EOFError                # Raised by input() when it hits end-of-file condition.
-      +-- LookupError             # Raised when a look-up on sequence or dict fails.
+      +-- LookupError             # Raised when a look-up on a sequence or dict fails.
       |    +-- IndexError         # Raised when a sequence index is out of range.
       |    +-- KeyError           # Raised when a dictionary key is not found.
       +-- NameError               # Raised when a variable name is not found.
diff --git a/index.html b/index.html
index 13fea40..8d06878 100644
--- a/index.html
+++ b/index.html
@@ -1295,7 +1295,7 @@ LogicOp = Enum(<span class="hljs-string">'LogicOp'</span>, {<span class="hljs-st
       |    +-- ZeroDivisionError  # Raised when dividing by zero.
       +-- AttributeError          # Raised when an attribute is missing.
       +-- EOFError                # Raised by input() when it hits end-of-file condition.
-      +-- LookupError             # Raised when a look-up on sequence or dict fails.
+      +-- LookupError             # Raised when a look-up on a sequence or dict fails.
       |    +-- IndexError         # Raised when a sequence index is out of range.
       |    +-- KeyError           # Raised when a dictionary key is not found.
       +-- NameError               # Raised when a variable name is not found.