--- a/layout/style/nsCSSParser.cpp
+++ b/layout/style/nsCSSParser.cpp
@@ -14521,18 +14521,17 @@ CSSParserImpl::ParseTextEmphasis()
   nsCSSValue values[numProps];
 
   int32_t found = ParseChoice(values, kTextEmphasisIDs, numProps);
   if (found < 1) {
     return false;
   }
 
   if (!(found & 1)) { // Provide default text-emphasis-style
-    values[0].SetIntValue(NS_STYLE_TEXT_EMPHASIS_STYLE_NONE,
-                          eCSSUnit_Enumerated);
+    values[0].SetNoneValue();
   }
   if (!(found & 2)) { // Provide default text-emphasis-color
     values[1].SetIntValue(NS_COLOR_CURRENTCOLOR, eCSSUnit_EnumColor);
   }
 
   for (int32_t index = 0; index < numProps; index++) {
     AppendValue(kTextEmphasisIDs[index], values[index]);
   }