diff --git a/Correlator/Dialog/AudioFileDialog.xaml b/Correlator/Dialog/AudioFileDialog.xaml
index d136cbc..327c8ae 100644
--- a/Correlator/Dialog/AudioFileDialog.xaml
+++ b/Correlator/Dialog/AudioFileDialog.xaml
@@ -106,7 +106,7 @@
                         Header="时长"
                         IsReadOnly="True" />
                     <DataGridTemplateColumn
-                        Width="180"
+                        Width="110"
                         CanUserResize="False"
                         Header="操作">
                         <DataGridTemplateColumn.CellTemplate>
@@ -117,7 +117,6 @@
                                         hc:IconElement.Geometry="{StaticResource AudioGeometry}"
                                         BorderThickness="0"
                                         Command="{Binding DataContext.PlayAudioCommand, ElementName=TargetDataGrid}"
-                                        Content="播放"
                                         Style="{StaticResource ButtonInfo}" />
 
                                     <Button
@@ -125,7 +124,6 @@
                                         hc:IconElement.Geometry="{StaticResource DeleteFillCircleGeometry}"
                                         BorderThickness="0"
                                         Command="{Binding DataContext.DeleteAudioCommand, ElementName=TargetDataGrid}"
-                                        Content="删除"
                                         Style="{StaticResource ButtonDanger}" />
                                 </StackPanel>
                             </DataTemplate>

diff --git a/Correlator/Dialog/AudioFileDialog.xaml b/Correlator/Dialog/AudioFileDialog.xaml
index d136cbc..327c8ae 100644
--- a/Correlator/Dialog/AudioFileDialog.xaml
+++ b/Correlator/Dialog/AudioFileDialog.xaml
@@ -106,7 +106,7 @@
                         Header="时长"
                         IsReadOnly="True" />
                     <DataGridTemplateColumn
-                        Width="180"
+                        Width="110"
                         CanUserResize="False"
                         Header="操作">
                         <DataGridTemplateColumn.CellTemplate>
@@ -117,7 +117,6 @@
                                         hc:IconElement.Geometry="{StaticResource AudioGeometry}"
                                         BorderThickness="0"
                                         Command="{Binding DataContext.PlayAudioCommand, ElementName=TargetDataGrid}"
-                                        Content="播放"
                                         Style="{StaticResource ButtonInfo}" />
 
                                     <Button
@@ -125,7 +124,6 @@
                                         hc:IconElement.Geometry="{StaticResource DeleteFillCircleGeometry}"
                                         BorderThickness="0"
                                         Command="{Binding DataContext.DeleteAudioCommand, ElementName=TargetDataGrid}"
-                                        Content="删除"
                                         Style="{StaticResource ButtonDanger}" />
                                 </StackPanel>
                             </DataTemplate>
diff --git a/Correlator/Util/MethodExtensions.cs b/Correlator/Util/MethodExtensions.cs
index 20ca87b..d83c5c7 100644
--- a/Correlator/Util/MethodExtensions.cs
+++ b/Correlator/Util/MethodExtensions.cs
@@ -554,7 +554,7 @@
                 using (var reader = new AudioFileReader(audioPath))
                 {
                     var timeSpan = reader.TotalTime;
-                    duration = timeSpan.ToString(@"hh\:mm\:ss");
+                    duration = timeSpan.ToString(@"mm\:ss");
                 }
             }