diff --git a/fork-versions/typey-chroma-kss/base/_html5.scss b/fork-versions/typey-chroma-kss/base/_html5.scss
index 3aef08601..fba788bf9 100644
--- a/fork-versions/typey-chroma-kss/base/_html5.scss
+++ b/fork-versions/typey-chroma-kss/base/_html5.scss
@@ -25,7 +25,7 @@ audio,
 canvas,
 progress,
 video {
-  @if support-legacy-browser(ie, '9') {
+  @if support-for(ie, 9) {
     // Correct `inline-block` display not defined in IE 8/9.
     display: inline-block;
   }
@@ -40,7 +40,7 @@ audio:not([controls]) {
   height: 0;
 }
 
-@if support-legacy-browser(ie, '10') {
+@if support-for(ie, 10) {
   // Address `[hidden]` styling not present in IE 8/9/10.
   [hidden] {
     display: none;
diff --git a/fork-versions/typey-chroma-kss/base/embedded/_embedded.scss b/fork-versions/typey-chroma-kss/base/embedded/_embedded.scss
index dc29b3c3a..652d3a20a 100644
--- a/fork-versions/typey-chroma-kss/base/embedded/_embedded.scss
+++ b/fork-versions/typey-chroma-kss/base/embedded/_embedded.scss
@@ -13,7 +13,7 @@
 // Style guide: base.embedded.img
 
 img {
-  @if support-legacy-browser(ie, '10') {
+  @if support-for(ie, 10) {
     // Remove border when inside `a` element in IE 8/9/10.
     border: 0;
   }
@@ -31,7 +31,7 @@ svg {
   // Responsive images
   max-width: 100%;
   height: auto;
-  @if support-legacy-browser(ie, '8') {
+  @if support-for(ie, 8) {
     .lt-ie9 & {
       // Correct IE 8 not scaling image height when resized.
       width: auto;
diff --git a/fork-versions/typey-chroma-kss/base/forms/_forms.scss b/fork-versions/typey-chroma-kss/base/forms/_forms.scss
index bb5908b49..93940d560 100644
--- a/fork-versions/typey-chroma-kss/base/forms/_forms.scss
+++ b/fork-versions/typey-chroma-kss/base/forms/_forms.scss
@@ -187,7 +187,7 @@ input {
 
 input[type="checkbox"],
 input[type="radio"] {
-  @if support-legacy-browser(ie, '10') {
+  @if support-for(ie, 10) {
     // Address box sizing set to `content-box` in IE 8/9/10.
     box-sizing: border-box;
     // Remove excess padding in IE 8/9/10.
@@ -220,7 +220,7 @@ fieldset {
 
 legend {
   // Correct `color` not being inherited in IE 8/9/10/11.
-  @if support-legacy-browser(ie, '11') {
+  @if support-for(ie, 11) {
     border: 0;
   }
   // Align legend text with a fieldset's text while removing left padding so
diff --git a/fork-versions/typey-chroma-kss/base/links/_links.scss b/fork-versions/typey-chroma-kss/base/links/_links.scss
index 1ab0f290c..a1a7562ee 100644
--- a/fork-versions/typey-chroma-kss/base/links/_links.scss
+++ b/fork-versions/typey-chroma-kss/base/links/_links.scss
@@ -32,7 +32,7 @@ a:focus {
 a:active {
   color: color(link-active);
 
-  @if support-legacy-browser(ie, '10') {
+  @if support-for(ie, 10) {
     // Remove the gray background color from active links in IE 10.
     background-color: transparent;
   }
diff --git a/fork-versions/typey-chroma-kss/base/text/_text.scss b/fork-versions/typey-chroma-kss/base/text/_text.scss
index 185bd342f..83713a9a6 100644
--- a/fork-versions/typey-chroma-kss/base/text/_text.scss
+++ b/fork-versions/typey-chroma-kss/base/text/_text.scss
@@ -142,7 +142,7 @@ ins {
 //
 // Style guide: base.text.mark
 
-@if support-legacy-browser(ie, '9') {
+@if support-for(ie, 9) {
   mark {
     // Address styling not present in IE 8/9.
     background: color(mark-bg);
diff --git a/test/fixtures/fork-versions/typey-chroma-kss/output.css b/test/fixtures/fork-versions/typey-chroma-kss/output.css
index 6d2f52f52..d65a114a6 100644
--- a/test/fixtures/fork-versions/typey-chroma-kss/output.css
+++ b/test/fixtures/fork-versions/typey-chroma-kss/output.css
@@ -204,9 +204,6 @@ img,
 svg {
   max-width: 100%;
   height: auto; }
-  .lt-ie9 img, .lt-ie9
-  svg {
-    width: auto; }
 
 svg:not(:root) {
   overflow: hidden; }