diff --git a/_Sidebar.md b/_Sidebar.md
index 4d63790..ecd3ecc 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -26,7 +26,7 @@ Modules and standard library:
 * [[smnp.text]]
 * [[smnp.music]]
 * [[smnp.music.command]]
-* [[smnp.music.tools]]
+* [[smnp.music.tool]]
 * [[smnp.audio.mic]]
 * [[smnp.audio.midi]]
 * [[smnp.audio.synth]]