diff --git a/README.md b/README.md
index 54dc367..0bc582c 100644
--- a/README.md
+++ b/README.md
@@ -23,8 +23,8 @@ Usage Example
 
 ```javascript
 $('#dropzone').filedrop({
-	fallback_id: 'upload_button',   // an identifier of a standard file input element, becomes the target of "click" events on the dropzone
-	fallback_dropzoneClick : true,  // if true, clicking dropzone triggers fallback file selection and the fallback element is made invisible.
+	fallback_id: 'upload_button',   // an identifier of a standard input[type="file"] element, becomes the target of "click" events on the dropzone
+	fallback_dropzoneClick : true,  // if true, clicking dropzone triggers fallback file selection and the fallback input[type="file"] element is made invisible.
 	url: 'upload.php',				// upload handler, handles each file separately, can also be a function taking the file and returning a url
 	paramname: 'userfile',			// POST parameter name used on serverside to reference file, can also be a function taking the filename and returning the paramname
 	withCredentials: true,			// make a cross-origin request with cookies
diff --git a/jquery.filedrop.js b/jquery.filedrop.js
index 1c05ec9..368d3d5 100644
--- a/jquery.filedrop.js
+++ b/jquery.filedrop.js
@@ -71,20 +71,23 @@
         files_count = 0,
         files;
 
-    if ( opts.fallback_dropzoneClick === true )
+    this.on('drop', drop).on('dragstart', opts.dragStart).on('dragenter', dragEnter).on('dragover', dragOver).on('dragleave', dragLeave);
+    $(document).on('drop', docDrop).on('dragenter', docEnter).on('dragover', docOver).on('dragleave', docLeave);
+
+    if ( opts.fallback_dropzoneClick === true && opts.fallback_id )
     {
+      // Fallback must be an input[type='file']
+      var fallback_type = $('#' + opts.fallback_id).attr('type');
+      if(fallback_type !== 'file') {
+        throw "Fallback element ["+opts.fallback_id+"] must be of type 'file', but it is of '" + fallback_type + "'.";
+      }
+
       $('#' + opts.fallback_id).css({
         display: 'none',
         width: 0,
         height: 0
       });
-    }
-
-    this.on('drop', drop).on('dragstart', opts.dragStart).on('dragenter', dragEnter).on('dragover', dragOver).on('dragleave', dragLeave);
-    $(document).on('drop', docDrop).on('dragenter', docEnter).on('dragover', docOver).on('dragleave', docLeave);
 
-    if ( opts.fallback_dropzoneClick === true )
-    {
       if ( this.find('#' + opts.fallback_id).length > 0 )
       {
         throw "Fallback element ["+opts.fallback_id+"] cannot be inside dropzone, unless option fallback_dropzoneClick is false";
@@ -97,12 +100,14 @@
       }
     }
 
-    $('#' + opts.fallback_id).change(function(e) {
-      opts.drop(e);
-      files = e.target.files;
-      files_count = files.length;
-      upload();
-    });
+    if(opts.fallback_id) {
+      $('#' + opts.fallback_id).change(function(e) {
+        opts.drop(e);
+        files = e.target.files;
+        files_count = files.length;
+        upload();
+      });   
+    }
 
     function drop(e) {
       if( opts.drop.call(this, e) === false ) return false;
@@ -424,7 +429,7 @@
                   this.send(ui8a.buffer);
               }
           }
-          
+
         xhr.sendAsBinary(builder);
 
         global_progress[global_progress_index] = 0;