diff --git a/src/LanguageServer/Protocol/Handler/SemanticTokens/SemanticTokensHelpers.cs b/src/LanguageServer/Protocol/Handler/SemanticTokens/SemanticTokensHelpers.cs
index 15c3acda9213e..c843c239128ee 100644
--- a/src/LanguageServer/Protocol/Handler/SemanticTokens/SemanticTokensHelpers.cs
+++ b/src/LanguageServer/Protocol/Handler/SemanticTokens/SemanticTokensHelpers.cs
@@ -91,7 +91,7 @@ public static async Task<int[]> ComputeSemanticTokensDataAsync(
             using var _1 = Classifier.GetPooledList(out var classifiedSpans);
             using var _2 = Classifier.GetPooledList(out var updatedClassifiedSpans);
 
-            // We either calculate the tokens for the full document span, or the user 
+            // We either calculate the tokens for the full document span, or the user
             // can pass in a range from the full document if they wish.
             ImmutableArray<TextSpan> textSpans;
             if (spans.Length == 0)
@@ -338,6 +338,10 @@ private static int ComputeNextToken(
                     // 6. Token modifiers - each set bit will be looked up in SemanticTokensLegend.tokenModifiers
                     modifierBits |= TokenModifiers.Deprecated;
                 }
+                else if (classificationType == ClassificationTypeNames.TestCode)
+                {
+                    // Skip additive types that are not being converted to token modifiers.
+                }
                 else
                 {
                     // 7. Token type - looked up in SemanticTokensLegend.tokenTypes (language server defined mapping