diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 05ec69cf300..27e75843485 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -3624,11 +3624,13 @@ namespace ts {
             return signatures;
         }
 
-        // The base constructor of a class can resolve to
-        // undefinedType if the class has no extends clause,
-        // unknownType if an error occurred during resolution of the extends expression,
-        // nullType if the extends expression is the null value, or
-        // an object type with at least one construct signature.
+        /**
+         * The base constructor of a class can resolve to
+         * * undefinedType if the class has no extends clause,
+         * * unknownType if an error occurred during resolution of the extends expression,
+         * * nullType if the extends expression is the null value, or
+         * * an object type with at least one construct signature.
+         */
         function getBaseConstructorTypeOfClass(type: InterfaceType): Type {
             if (!type.resolvedBaseConstructorType) {
                 const baseTypeNode = getBaseTypeNodeOfClass(type);