diff --git a/plugins/filetools/lang/en.js b/plugins/filetools/lang/en.js
index 725e858038a..a9d3e55d984 100644
--- a/plugins/filetools/lang/en.js
+++ b/plugins/filetools/lang/en.js
@@ -9,5 +9,5 @@ CKEDITOR.plugins.setLang( 'filetools', 'en', {
 	httpError403: 'HTTP error occurred during file uploading (403: Forbidden).',
 	httpError: 'HTTP error occurred during file uploading (error status: %1).',
 	noUrlError: 'Upload URL is not defined.',
-	responseError: 'Incorrect server response format: %1'
-} );
\ No newline at end of file
+	responseError: 'Incorrect server response.'
+} );
diff --git a/plugins/filetools/plugin.js b/plugins/filetools/plugin.js
index d5ebaabe0bf..dfca3146f68 100644
--- a/plugins/filetools/plugin.js
+++ b/plugins/filetools/plugin.js
@@ -178,12 +178,9 @@
 					}
 				} catch ( err ) {
 					// Response parsing error.
-					var responseError = fileLoader.lang.filetools.responseError;
-					if ( xhr.getResponseHeader( 'content-type' ).search( 'text/plain' ) !== -1 ) {
-						data.message = responseError.replace( '%1', xhr.responseText );
-					} else {
-						data.message = responseError.replace( ': %1', '.' );
-					}
+					data.message = fileLoader.lang.filetools.responseError;
+					window.console && window.console.log( xhr.responseText );
+
 					evt.cancel();
 				}
 			}, null, null, 999 );
diff --git a/tests/plugins/filetools/filetools.js b/tests/plugins/filetools/filetools.js
index bdf0fba36b9..314cf783193 100644
--- a/tests/plugins/filetools/filetools.js
+++ b/tests/plugins/filetools/filetools.js
@@ -173,35 +173,29 @@
 		},
 
 		'test fileUploadResponse event': function() {
+			var log = window.console && sinon.spy( window.console, 'log' );
+
 			var message = 'Not a JSON';
-			var contentType;
+			var error = 'Error.';
 
-			//Mock
+			// Mock.
 			var data = {
 				fileLoader: {
 					xhr: {
-						getResponseHeader: function() {
-							return contentType;
-						},
 						responseText: message
 					},
+
 					lang: {
 						filetools: {
-							responseError: 'Error: %1'
+							responseError: error
 						}
 					}
 				}
 			};
 
-			contentType = 'text/plain';
-
-			this.editor.fire( 'fileUploadResponse', data );
-			assert.areEqual( data.message, 'Error: ' + message );
-
-			contentType = 'text/html';
-
 			this.editor.fire( 'fileUploadResponse', data );
-			assert.areEqual( data.message, 'Error.' );
+			assert.areEqual( data.message, error );
+			assert.isTrue( log ? log.calledWith( message ) : true );
 		}
 	} );
 } )();