diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f14431e..327c77d 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -70,7 +70,7 @@ Answer the questions you feel like answering, or make up your own questions.
 
 * Other comments or suggestions.
 
-Post the completed Q & A on [geekhack thread](https://geekhack.org/index.php?topic=83599.0) with a heading "Tutorial usability survey".
+Post the completed Q & A on [geekhack thread](https://geekhack.org/index.php?topic=83599.0) with the heading "Tutorial usability survey".
 If you prefer your answers remain confidential, pm the completed Q & A to [wolfv](https://geekhack.org/index.php?action=pm;sa=send;u=25471).
 
 Usability survey results will be used to make improvements to the tutorials.
@@ -94,7 +94,7 @@ Answer the questions you feel like answering, or make up your own questions.
 
 * Other comments or suggestions.
 
-Post the completed Q & A on [geekhack thread](https://geekhack.org/index.php?topic=83599.0) with a heading "keybrd library usability survey".
+Post the completed Q & A on [geekhack thread](https://geekhack.org/index.php?topic=83599.0) with the heading "keybrd library usability survey".
 If you prefer your answers remain confidential, pm the completed Q & A to [wolfv](https://geekhack.org/index.php?action=pm;sa=send;u=25471).
 
 Usability survey results will be used to make improvements to the keybrd library.
diff --git a/tutorials/tutorial_2_single-layer_keyboard.md b/tutorials/tutorial_2_single-layer_keyboard.md
index e87763e..2865ef3 100644
--- a/tutorials/tutorial_2_single-layer_keyboard.md
+++ b/tutorials/tutorial_2_single-layer_keyboard.md
@@ -22,7 +22,7 @@ The scanner should have enough readPins to cover all the keys of the longest row
 |  **0** |  1  |  2  |  3  |
 |  **1** |  a  |  b  |     |
 
-[keybrd tutorials usability survey](../CONTRIBUTING.md##keybrd-tutorials-usability-survey)
+Please take the [keybrd tutorials usability survey](../CONTRIBUTING.md#keybrd-tutorials-usability-survey)
 
 <br>
 <a rel="license" href="https://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://licensebuttons.net/l/by/4.0/88x31.png" /></a><br /><span xmlns:dct="http://purl.org/dc/terms/" property="dct:title">keybrd tutorial</span> by <a xmlns:cc="https://creativecommons.org/ns" href="https://github.com/wolfv6/keybrd" property="cc:attributionName" rel="cc:attributionURL">Wolfram Volpi</a> is licensed under a <a rel="license" href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a>.<br />Permissions beyond the scope of this license may be available at <a xmlns:cc="https://creativecommons.org/ns" href="https://github.com/wolfv6/keybrd/issues/new" rel="cc:morePermissions">https://github.com/wolfv6/keybrd/issues/new</a>.