diff --git a/WiFiManager.cpp b/WiFiManager.cpp
index 3b70825..4e4d9c6 100644
--- a/WiFiManager.cpp
+++ b/WiFiManager.cpp
@@ -42,7 +42,7 @@ void WiFiManagerParameter::init(const char *id, const char *placeholder, const c
   _length         = length;
   _labelPlacement = labelPlacement;
   _value          = new char[length + 1];
-  for (int i = 0; i < length; i++) {
+  for (int i = 0; i < length + 1; i++) {
     _value[i] = 0;
   }
   if (defaultValue != NULL) {