diff --git a/scss/_dropdown.scss b/scss/_dropdown.scss
index ac3c8c8a2c5a851abb91bc52cc4d40298e170177..c657c5d103bd43f3a04e69f4aff8c66506e8cd37 100644
--- a/scss/_dropdown.scss
+++ b/scss/_dropdown.scss
@@ -10,7 +10,7 @@
   white-space: nowrap;
 
   // Generate the caret automatically
-  @include caret;
+  @include caret();
 }
 
 // The dropdown menu
diff --git a/scss/_images.scss b/scss/_images.scss
index cb9795e272abc2823f87cbf933471d9f4176e7cc..b11b45a37bb04e620d288b2434a9b66218870966 100644
--- a/scss/_images.scss
+++ b/scss/_images.scss
@@ -6,7 +6,7 @@
 // which weren't expecting the images within themselves to be involuntarily resized.
 // See also https://github.com/twbs/bootstrap/issues/18178
 .img-fluid {
-  @include img-fluid;
+  @include img-fluid();
 }
 
 
@@ -19,7 +19,7 @@
   @include box-shadow($thumbnail-box-shadow);
 
   // Keep them at most 100% wide
-  @include img-fluid;
+  @include img-fluid();
 }
 
 //
diff --git a/scss/_type.scss b/scss/_type.scss
index f8ed09065eb2f85ad404d3c6897967c27d1511c2..43dde7d0fe586ea7eb7dc7253a7ae747906869fb 100644
--- a/scss/_type.scss
+++ b/scss/_type.scss
@@ -82,12 +82,12 @@ mark,
 //
 
 .list-unstyled {
-  @include list-unstyled;
+  @include list-unstyled();
 }
 
 // Inline turns list items into inline-block
 .list-inline {
-  @include list-unstyled;
+  @include list-unstyled();
 }
 .list-inline-item {
   display: inline-block;
diff --git a/scss/mixins/_caret.scss b/scss/mixins/_caret.scss
index 8ecef65b47689d9c15071d4292c2baa03cc5f3f5..07d72280ce21773a0e9de09f7bfadeed0c97432b 100644
--- a/scss/mixins/_caret.scss
+++ b/scss/mixins/_caret.scss
@@ -33,11 +33,11 @@
       vertical-align: $caret-vertical-align;
       content: "";
       @if $direction == down {
-        @include caret-down;
+        @include caret-down();
       } @else if $direction == up {
-        @include caret-up;
+        @include caret-up();
       } @else if $direction == right {
-        @include caret-right;
+        @include caret-right();
       }
     }
 
@@ -51,7 +51,7 @@
         margin-right: $caret-spacing;
         vertical-align: $caret-vertical-align;
         content: "";
-        @include caret-left;
+        @include caret-left();
       }
     }
 
diff --git a/site/docs/4.3/assets/scss/_brand.scss b/site/docs/4.3/assets/scss/_brand.scss
index 226d7db174ae4f462b0773b55766e91bd2484120..c3ba73c3e3a67990c9de6e2dd91c13844077e509 100644
--- a/site/docs/4.3/assets/scss/_brand.scss
+++ b/site/docs/4.3/assets/scss/_brand.scss
@@ -10,7 +10,7 @@
   overflow: hidden;
   color: $bd-purple;
   background-color: #f9f9f9;
-  @include border-radius;
+  @include border-radius();
 
   .inverse {
     color: $white;
@@ -79,7 +79,7 @@
   height: 4rem;
   margin-right: .25rem;
   margin-left: .25rem;
-  @include border-radius;
+  @include border-radius();
 
   @include media-breakpoint-up(md) {
     width: 6rem;
diff --git a/site/docs/4.3/assets/scss/_callouts.scss b/site/docs/4.3/assets/scss/_callouts.scss
index a10fc05b8d77e88924e058abd85feff1afc252cd..6b973594975cbbdaf37c06106c224b3d8b78bb0e 100644
--- a/site/docs/4.3/assets/scss/_callouts.scss
+++ b/site/docs/4.3/assets/scss/_callouts.scss
@@ -8,7 +8,7 @@
   margin-bottom: 1.25rem;
   border: 1px solid #eee;
   border-left-width: .25rem;
-  @include border-radius;
+  @include border-radius();
 
   h4 {
     margin-top: 0;
@@ -20,7 +20,7 @@
   }
 
   code {
-    @include border-radius;
+    @include border-radius();
   }
 
   + .bd-callout {
diff --git a/site/docs/4.3/assets/scss/_clipboard-js.scss b/site/docs/4.3/assets/scss/_clipboard-js.scss
index 6d4bfeea481c73b022fb66a9264cee6f3eefeb9c..760a806bb2c5f00dd9fa7dd060624be92fc87083 100644
--- a/site/docs/4.3/assets/scss/_clipboard-js.scss
+++ b/site/docs/4.3/assets/scss/_clipboard-js.scss
@@ -27,7 +27,7 @@
   color: #818a91;
   background-color: transparent;
   border: 0;
-  @include border-radius;
+  @include border-radius();
 
   &:hover {
     color: $white;