diff --git a/_Sidebar.md.md b/_Sidebar.md.md
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--- a/_Sidebar.md.md
+++ b/_Sidebar.md.md
@@ -25,7 +25,7 @@
 ### Other diagrams  
 - [PIN_LED](PIN_LED)  
 - [PIN_SWITCH](PIN_SWITCH)  
-- [ISP gateway](ISP-gateway)  
+- [ISP gateway](ISP_gateway)  
 ### BIOS Dumper 2.6
 - [Just what you need to know to know your BIOS with BIOS Dumper 2.6](Just-what-you-need-to-know-to-know-your-BIOS-with-BIOS-Dumper-2.6.)
 - [Guide for using BIOS dumper](Guide-for-using-BIOS-dumper)