diff --git a/source/maskManager.cpp b/source/maskManager.cpp
index d2d8320..6915416 100644
--- a/source/maskManager.cpp
+++ b/source/maskManager.cpp
@@ -54,7 +54,7 @@ void MaskManager::showMask(QWidget* requester)
     else
     {
         QWidget* widget = m_activeRequests.last();
-        if(widget->windowFlags().testFlag(Qt::Dialog))
+        if(!widget->windowFlags().testFlag(Qt::Dialog))
         {
             const QMetaObject* meta = widget->metaObject();
             int methodIndex = meta->indexOfMethod("showMask()");
@@ -80,7 +80,7 @@ void MaskManager::hideMask(QWidget* requester)
     else
     {
         QWidget* widget = m_activeRequests.last();
-        if(widget->windowFlags().testFlag(Qt::Dialog))
+        if(!widget->windowFlags().testFlag(Qt::Dialog))
         {
             const QMetaObject* meta = widget->metaObject();
             int methodIndex = meta->indexOfMethod("hideMask()");
diff --git a/ui/connectionDialog.ui b/ui/connectionDialog.ui
index 627f801..c401e23 100644
--- a/ui/connectionDialog.ui
+++ b/ui/connectionDialog.ui
@@ -25,16 +25,16 @@
     <number>0</number>
    </property>
    <property name="leftMargin">
-    <number>0</number>
+    <number>1</number>
    </property>
    <property name="topMargin">
-    <number>0</number>
+    <number>1</number>
    </property>
    <property name="rightMargin">
-    <number>0</number>
+    <number>1</number>
    </property>
    <property name="bottomMargin">
-    <number>0</number>
+    <number>1</number>
    </property>
    <item>
     <widget class="QSplitter" name="splitter">
diff --git a/ui/mainwindow.ui b/ui/mainwindow.ui
index 233ccfc..eb36006 100644
--- a/ui/mainwindow.ui
+++ b/ui/mainwindow.ui
@@ -183,17 +183,17 @@ QTabBar::tab
 QTabBar::tab:selected
 {
     color:rgb(70,130,180);
-    margin-bottomo:0px;
+    margin-bottom:0px;
     border-bottom: 2px solid rgb(70,130,180);
 }
 
 QHeaderView
 {
-    border:0px;
 	background-color: rgb(40, 40, 40);
 }
 QHeaderView::section
 {
+	border-bottom: 1px solid rgb(30,30,30);
 }
 
 QTableView
diff --git a/ui/messageDialog.ui b/ui/messageDialog.ui
index 5289aae..9b1c20b 100644
--- a/ui/messageDialog.ui
+++ b/ui/messageDialog.ui
@@ -22,16 +22,16 @@
     <number>0</number>
    </property>
    <property name="leftMargin">
-    <number>0</number>
+    <number>1</number>
    </property>
    <property name="topMargin">
-    <number>0</number>
+    <number>1</number>
    </property>
    <property name="rightMargin">
-    <number>0</number>
+    <number>1</number>
    </property>
    <property name="bottomMargin">
-    <number>0</number>
+    <number>1</number>
    </property>
    <item>
     <widget class="QWidget" name="centralWidget" native="true">