diff --git a/lib/parser_ref.js b/lib/parser_ref.js
index 7aa9039..f010c0c 100644
--- a/lib/parser_ref.js
+++ b/lib/parser_ref.js
@@ -57,7 +57,7 @@ module.exports = function parse_reference(str, parser, options, env) {
   }
 
   // ensure that the end of the line is empty
-  pos = state.skipSpaces(pos);
+  while (pos < max && state.src.charCodeAt(pos) === 0x20/* space */) { pos++; }
   if (pos < max && state.src.charCodeAt(pos) !== 0x0A) { return -1; }
 
   label = normalizeReference(str.slice(1, labelEnd));
diff --git a/lib/rules_inline/state_inline.js b/lib/rules_inline/state_inline.js
index 40be36a..b361664 100644
--- a/lib/rules_inline/state_inline.js
+++ b/lib/rules_inline/state_inline.js
@@ -42,11 +42,5 @@ StateInline.prototype.push = function (token) {
   this.pendingLevel = this.level;
 };
 
-StateInline.prototype.skipSpaces = function skipSpaces(pos) {
-  for (var max = this.src.length; pos < max; pos++) {
-    if (this.src.charCodeAt(pos) !== 0x20/* space */) { break; }
-  }
-  return pos;
-};
 
 module.exports = StateInline;