diff --git a/src/widgets/HexdumpWidget.cpp b/src/widgets/HexdumpWidget.cpp
index 92ddb98b..18d4e597 100644
--- a/src/widgets/HexdumpWidget.cpp
+++ b/src/widgets/HexdumpWidget.cpp
@@ -38,7 +38,24 @@ HexdumpWidget::HexdumpWidget(MainWindow *main, QAction *action) :
     margin = static_cast<int>(ui->hexASCIIText->document()->documentMargin());
     ui->asciiHeaderLabel->setContentsMargins(margin, 0, margin, 0);
 
-    ui->splitter->setCollapsible(0, false); // Only Sidebar should collapse
+    ui->splitter->setChildrenCollapsible(false);
+
+    QToolButton *closeButton = new QToolButton;
+    QIcon closeIcon = qApp->style()->standardIcon(QStyle::SP_DialogCloseButton);
+    closeButton->setIcon(closeIcon);
+    ui->hexSideTab_2->setCornerWidget(closeButton);
+
+    ui->openSideViewB->hide();  // hide button at startup since side view is visible
+
+    connect(closeButton, &QToolButton::clicked, this, [this]{
+       ui->hexSideTab_2->hide();
+       ui->openSideViewB->show();
+    });
+
+    connect(ui->openSideViewB, &QToolButton::clicked, this, [this]{
+        ui->hexSideTab_2->show();
+        ui->openSideViewB->hide();
+    });
 
     setupFonts();
 
diff --git a/src/widgets/HexdumpWidget.ui b/src/widgets/HexdumpWidget.ui
index 61baf668..cfee4c39 100644
--- a/src/widgets/HexdumpWidget.ui
+++ b/src/widgets/HexdumpWidget.ui
@@ -21,6 +21,12 @@
   </property>
   <widget class="QWidget" name="dockWidgetContents">
    <layout class="QHBoxLayout" name="horizontalLayout">
+    <property name="spacing">
+     <number>0</number>
+    </property>
+    <property name="rightMargin">
+     <number>0</number>
+    </property>
     <item>
      <widget class="QSplitter" name="splitter">
       <property name="orientation">
@@ -38,8 +44,8 @@
          <rect>
           <x>0</x>
           <y>0</y>
-          <width>553</width>
-          <height>764</height>
+          <width>515</width>
+          <height>770</height>
          </rect>
         </property>
         <layout class="QGridLayout" name="gridLayout_2" columnstretch="0,0,0,0,1">
@@ -243,6 +249,9 @@
          <string>Parsing</string>
         </attribute>
         <layout class="QVBoxLayout" name="verticalLayout_23">
+         <property name="spacing">
+          <number>6</number>
+         </property>
          <property name="leftMargin">
           <number>0</number>
          </property>
@@ -657,6 +666,31 @@
       </widget>
      </widget>
     </item>
+    <item>
+     <widget class="QToolButton" name="openSideViewB">
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
+        <horstretch>0</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
+      <property name="maximumSize">
+       <size>
+        <width>25</width>
+        <height>16777215</height>
+       </size>
+      </property>
+      <property name="text">
+       <string/>
+      </property>
+      <property name="autoRaise">
+       <bool>true</bool>
+      </property>
+      <property name="arrowType">
+       <enum>Qt::LeftArrow</enum>
+      </property>
+     </widget>
+    </item>
    </layout>
   </widget>
   <action name="actionHideHexdump_side_panel">