diff --git a/docs/4.0/getting-started/theming.md b/docs/4.0/getting-started/theming.md
index 48d1b058f75b02d1b61ec1f2b19a65b58d84708d..5db2472da8c7919a9f6ef269857150a39f33de91 100644
--- a/docs/4.0/getting-started/theming.md
+++ b/docs/4.0/getting-started/theming.md
@@ -60,7 +60,7 @@ In your `custom.scss`, you'll import Bootstrap's source Sass files. You have two
 // Required
 @import "node_modules/bootstrap/scss/functions";
 @import "node_modules/bootstrap/scss/variables";
-@import "node_modules/bootstrap/scss/mixins";
+@import "node_modules/bootstrap/scss/_mixins";
 
 // Optional
 @import "node_modules/bootstrap/scss/reboot";
@@ -126,7 +126,7 @@ To remove colors from `$theme-colors`, or any other map, use `map-remove`. Be aw
 // Required
 @import "node_modules/bootstrap/scss/functions";
 @import "node_modules/bootstrap/scss/variables";
-@import "node_modules/bootstrap/scss/mixins";
+@import "node_modules/bootstrap/scss/_mixins";
 
 $theme-colors: map-remove($theme-colors, "info", "light", "dark");