diff --git a/lib/tput.js b/lib/tput.js
index 299963c..482429f 100644
--- a/lib/tput.js
+++ b/lib/tput.js
@@ -223,11 +223,7 @@ Tput.prototype.parseTerminfo = function(data) {
 
     while (data[j]) j++;
 
-    // assert.ok(j < data.length, 'Expected ' + j + ' < ' + data.length);
-    if (j >= data.length) {
-      delete info.strings[key];
-      return;
-    }
+    assert(j < data.length);
 
     info.strings[key] = data.toString('ascii', s, j);
   });
@@ -376,11 +372,7 @@ Tput.prototype.parseExtended = function(data) {
 
     while (data[j]) j++;
 
-    // assert.ok(j < data.length, 'Expected ' + j + ' < ' + data.length);
-    if (j >= data.length) {
-      _strings[k] = '';
-      return;
-    }
+    assert(j < data.length);
 
     // Find out where the string table ends by
     // getting the highest string length.