diff --git a/ch26_vimscript_variables_scopes.md b/ch26_vimscript_variables_scopes.md
index d2d510d..1b0ce24 100644
--- a/ch26_vimscript_variables_scopes.md
+++ b/ch26_vimscript_variables_scopes.md
@@ -2,7 +2,7 @@
 
 Before diving into Vimscript functions, let's learn about the different sources and scopes of Vim variables.
 
-## Mutable And Immutable Variable
+## Mutable And Immutable Variables
 
 You can assign a value to a variable in Vim with `let`: