diff --git a/src/analyzer.js b/src/analyzer.js
index 7a13e96..3247740 100644
--- a/src/analyzer.js
+++ b/src/analyzer.js
@@ -1,4 +1,5 @@
 import {
+  comment,
   literal,
   symbolExpr,
   Program,
@@ -105,7 +106,7 @@ function desugarProgram(programs, pinfo, isTopLevelExpr) {
   var acc = [
     [], (pinfo || new structures.pinfo())
   ];
-  var res = programs.reduce((function(acc, p) {
+  var res = programs.filter(function(p){ return !(p instanceof comment); }).reduce((function(acc, p) {
     var desugaredAndPinfo = p.desugar(acc[1]);
     // if it's an expression, insert a print-values call so it shows up in the repl
     if (structures.isExpression(p) && isTopLevelExpr) {
diff --git a/src/lex.js b/src/lex.js
index 9db1eed..b66eb62 100644
--- a/src/lex.js
+++ b/src/lex.js
@@ -184,9 +184,7 @@ var jsnums = require('./runtime/js-numbers');
     i = chewWhiteSpace(str, 0);
     while (i < str.length) {
       sexp = readSExpByIndex(str, i);
-      if (!(sexp instanceof comment)) {
-        sexps.push(sexp);   
-      }
+      sexps.push(sexp);
       i = chewWhiteSpace(str, sexp.location.startChar + sexp.location.span);
     }
     sexps.location = new Location(startCol, startRow, 0, i, source);
@@ -254,7 +252,7 @@ var jsnums = require('./runtime/js-numbers');
         dot2Idx = dot1Idx ? list.length : false; // if we've seen dot1, save this idx to dot2Idx
         dot1Idx = dot1Idx || list.length; // if we haven't seen dot1, save this idx to dot1Idx
       }
-      if (!(sexp instanceof comment)) { // if it's not a comment, add it to the list
+      if (!(sexp instanceof Comment)) { // if it's not a comment, add it to the list
         sexp.parent = list; // set this list as it's parent
         list.push(sexp); // and add the sexp to the list
       }
@@ -767,9 +765,9 @@ var jsnums = require('./runtime/js-numbers');
     }
     i++;
     column++; // hop over '|#'
-    var cmmt = new comment(txt);
-    cmmt.location = new Location(startCol, startRow, iStart, i - iStart);
-    return cmmt;
+    var comment = new compiler.comment(txt);
+    comment.location = new Location(startCol, startRow, iStart, i - iStart);
+    return comment;
   }
 
   // readSExpComment : String Number -> Atom
@@ -797,7 +795,7 @@ var jsnums = require('./runtime/js-numbers');
         , "Error-GenericReadError");
     }
     // if we're here, then we read a proper s-expr
-    var atom = new comment("(" + nextSExp.toString() + ")");
+    var atom = new compiler.comment("(" + nextSExp.toString() + ")");
     i = nextSExp.location.endChar;
     atom.location = new Location(startCol, startRow, iStart, i - iStart);
     return atom;
@@ -823,7 +821,7 @@ var jsnums = require('./runtime/js-numbers');
       throwError(new types.Message(["read: Unexpected EOF when reading a line comment"])
         , new Location(startCol, startRow, iStart, i - iStart));
     }
-    var atom = new comment(txt);
+    var atom = new compiler.comment(txt);
     atom.location = new Location(startCol, startRow, iStart, i + 1 - iStart);
     // at the end of the line, reset line/col values
     line++;
@@ -874,7 +872,7 @@ var jsnums = require('./runtime/js-numbers');
     symbol.location = new Location(column - 1, startRow, iStart, i - iStart);
 
     // read the next non-comment sexp
-    while (!nextSExp || (nextSExp instanceof comment)) {
+    while (!nextSExp || (nextSExp instanceof Comment)) {
       i = chewWhiteSpace(str, i);
       try {
         nextSExp = readSExpByIndex(str, i);
diff --git a/src/parser.js b/src/parser.js
index 7e3c746..8700fbe 100644
--- a/src/parser.js
+++ b/src/parser.js
@@ -56,6 +56,7 @@ var compiler = require('./compiler');
   function isSymbol(x)      { return x instanceof symbolExpr; }
   function isLiteral(x)     { return x instanceof literal; }
   function isUnsupported(x) { return x instanceof unsupportedExpr; }
+  function isComment(x)     { return x instanceof comment; }
 
   function isCons(x) { return x instanceof Array && x.length >= 1; }
   function rest(ls) { return ls.slice(1); }
@@ -74,7 +75,8 @@ var compiler = require('./compiler');
   // parse* : sexp list -> Program list
   function parseStar(sexps) {
     function parseSExp(sexp) {
-      return isDefinition(sexp) ? parseDefinition(sexp) :
+      return isComment(sexp) ? sexp :
+            isDefinition(sexp) ? parseDefinition(sexp) :
             isExpr(sexp) ? parseExpr(sexp) :
             isRequire(sexp) ? parseRequire(sexp) :
             isProvide(sexp) ? parseProvide(sexp) :
@@ -821,7 +823,8 @@ var compiler = require('./compiler');
   }
 
   function parseExprSingleton(sexp) {
-    var singleton = isUnsupported(sexp) ? sexp :
+    var singleton = isComment(sexp) ? sexp :
+                    isUnsupported(sexp) ? sexp :
                     isVector(sexp) ? parseVector(sexp) :
                     isSymbol(sexp) ? sexp :
                     isLiteral(sexp) ? sexp :
diff --git a/src/structures.js b/src/structures.js
index 3c697c5..7f7d37b 100644
--- a/src/structures.js
+++ b/src/structures.js
@@ -295,7 +295,6 @@ export class ifExpr extends Program {
     this.stx = stx;
   }
   toString() {
-    console.log(this);
     return "(if "+this.predicate.toString()+" "+this.consequence.toString()+" "+this.alternative.toString()+")";
   }
 }