diff --git a/src/compiler/scanner.ts b/src/compiler/scanner.ts
index 2e692470cc..55e58bb4d4 100644
--- a/src/compiler/scanner.ts
+++ b/src/compiler/scanner.ts
@@ -536,10 +536,10 @@ namespace ts {
     }
 
     /**
-     * Extract comments from the given source text starting at the given position. 
+     * Extract comments from text prefixing the token closest following `pos`. 
      * The return value is an array containing a TextRange for each comment.
      * Single-line comment ranges include the beginning '//' characters but not the ending line break.
-     * Multi - line comment ranges include the beginning '/* and ending '<asterick>/' characters.
+     * Multi - line comment ranges include the beginning '/* and ending '<asterisk>/' characters.
      * The return value is undefined if no comments were found.
      * @param trailing 
      * If false, whitespace is skipped until the first line break and comments between that location