diff --git a/src/language-css/parser-postcss.js b/src/language-css/parser-postcss.js
index 634b11b3..b88a5b28 100644
--- a/src/language-css/parser-postcss.js
+++ b/src/language-css/parser-postcss.js
@@ -205,7 +205,14 @@ function parseNestedCSS(node) {
       }
     }
     if (node.type === "css-atrule" && typeof node.params === "string") {
-      node.params = parseMediaQuery(node.params);
+      if (node.name === "warn" || node.name === "error") {
+        node.params = {
+          type: "media-unknown",
+          value: node.params
+        };
+      } else {
+        node.params = parseMediaQuery(node.params);
+      }
     }
   }
   return node;
diff --git a/tests/css_scss/__snapshots__/jsfmt.spec.js.snap b/tests/css_scss/__snapshots__/jsfmt.spec.js.snap
index 7d0cfbc7..c8462fc5 100644
--- a/tests/css_scss/__snapshots__/jsfmt.spec.js.snap
+++ b/tests/css_scss/__snapshots__/jsfmt.spec.js.snap
@@ -54,6 +54,21 @@ $default: "very-long-long-long-long-long-long-long-long-long-long-long-value"
     }
   }
 }
+
+@warn "Warn (#{$message}).";
+@warn  "Warn (#{$message}).";
+@warn   "Warn (#{$message}).";
+@warn #{$message};
+@warn "Very long long long long long long long long long long long long long line (#{$message}).";
+@warn
+  "Very long long long long long long long long long long long long long line (#{$message}).";
+@error "Error (#{$message}).";
+@error  "Error (#{$message}).";
+@error   "Error (#{$message}).";
+@error #{$message};
+@error "Very long long long long long long long long long long long long long line Error (#{$message}).";
+@error
+  "Very long long long long long long long long long long long long long line Error (#{$message}).";
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 @media #{$g-breakpoint-tiny} {
 }
@@ -112,4 +127,17 @@ $default: "very-long-long-long-long-long-long-long-long-long-long-long-value" !d
   }
 }
 
+@warn "Warn (#{$message}).";
+@warn "Warn (#{$message}).";
+@warn "Warn (#{$message}).";
+@warn #{$message};
+@warn "Very long long long long long long long long long long long long long line (#{$message}).";
+@warn "Very long long long long long long long long long long long long long line (#{$message}).";
+@error "Error (#{$message}).";
+@error "Error (#{$message}).";
+@error "Error (#{$message}).";
+@error #{$message};
+@error "Very long long long long long long long long long long long long long line Error (#{$message}).";
+@error "Very long long long long long long long long long long long long long line Error (#{$message}).";
+
 `;
diff --git a/tests/css_scss/scss.css b/tests/css_scss/scss.css
index d332e5f7..57d52da8 100644
--- a/tests/css_scss/scss.css
+++ b/tests/css_scss/scss.css
@@ -44,3 +44,18 @@ $default: "very-long-long-long-long-long-long-long-long-long-long-long-value"
     }
   }
 }
+
+@warn "Warn (#{$message}).";
+@warn  "Warn (#{$message}).";
+@warn   "Warn (#{$message}).";
+@warn #{$message};
+@warn "Very long long long long long long long long long long long long long line (#{$message}).";
+@warn
+  "Very long long long long long long long long long long long long long line (#{$message}).";
+@error "Error (#{$message}).";
+@error  "Error (#{$message}).";
+@error   "Error (#{$message}).";
+@error #{$message};
+@error "Very long long long long long long long long long long long long long line Error (#{$message}).";
+@error
+  "Very long long long long long long long long long long long long long line Error (#{$message}).";