diff --git a/layout/style/nsCSSParser.cpp b/layout/style/nsCSSParser.cpp
index 247d351464..494d8f6aa6 100644
--- a/layout/style/nsCSSParser.cpp
+++ b/layout/style/nsCSSParser.cpp
@@ -5427,8 +5427,7 @@ CSSParserImpl::LookForTokenType(nsCSSTokenType aType) {
   const char16_t stopChars[] = { ';', '!', '}', 0 };
   nsDependentString stopSymbolChars(stopChars);
   while (GetToken(true)) {
-    // The current function has percentage values.
-    if (mToken.mType == eCSSToken_Percentage) {
+    if (mToken.mType == aType) {
       rv = true;
       break;
     }