diff --git a/test/fixtures/14-preprocess-css/after.js b/test/fixtures/14-preprocess-css/after.js
index 73a2904..40e90bb 100644
--- a/test/fixtures/14-preprocess-css/after.js
+++ b/test/fixtures/14-preprocess-css/after.js
@@ -27,3 +27,9 @@ const RulesetInerpolation = styled.div.withConfig({
   displayName: "before__RulesetInerpolation",
   componentId: "before__RulesetInerpolation-11wer1a"
 })([[" {width: ", props => props.width, ";;", props => props.ruleset, ";}"], [":hover {color: papayawhip;}"]]);
+
+const Prefixes = styled.div.withConfig({
+  displayName: "before__Prefixes",
+  componentId: "before__Prefixes-1vitzne"
+})([[" {display:-webkit-box;display:-webkit-flex;-ms-flexbox;display:flex;-webkit-box-align: center;-ms-flex-align: center;align-items: center;}"]]);
+
diff --git a/test/fixtures/14-preprocess-css/before.js b/test/fixtures/14-preprocess-css/before.js
index 4db0893..ef1b716 100644
--- a/test/fixtures/14-preprocess-css/before.js
+++ b/test/fixtures/14-preprocess-css/before.js
@@ -40,3 +40,8 @@ const RulesetInerpolation = styled.div`
     color: papayawhip;
   }
 `;
+
+const Prefixes = styled.div`
+  display: flex;
+  align-items: center;
+`;