1 files changed, 2 insertions, 0 deletions
diff --git a/prevent-pseudo-domain.js b/prevent-pseudo-domain.js
index 58fe064..de17fae 100644
--- a/prevent-pseudo-domain.js
+++ b/prevent-pseudo-domain.js
@@ -23,6 +23,8 @@
     }
 
     requirePrefix = function(s) {
+        if (!s.trim())
+          return false;
         let validators = [hasMultipleWords, isWord, isIPAddress, hasScheme, hasTLD];
         return !(validators.some(function(validator) { return validator(s); }));
     }