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diff --git a/README.md b/README.md
index 2d0d16b2176..96e0b301cb5 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ It will (more or less) look like this:
 
 ![Figure 0.1](images/application.png)
 
-OK, [let's start at the beginning...](01_how_internet_works/README.md)
+OK, [let's start at the beginning...](01_how_the_internet_works/README.md)
 
 ## About and contributing
 
diff --git a/SUMMARY.md b/SUMMARY.md
index e66ec7c6d61..1d6699ce38c 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -1,7 +1,7 @@
 # Summary
 
 * [Introduction](README.md)
-* [How the Internet works?](01_how_internet_works/README.md)
+* [How the Internet works?](01_how_the_internet_works/README.md)
 * [Intro to Command Line](02_intro_to_command_line/README.md)
 * [Python installation](03_python_installation/README.md)
 * [Introduction to Python](04_python_introduction/README.md)