diff --git a/src/libs/ifc/xml/vabstractpattern.cpp b/src/libs/ifc/xml/vabstractpattern.cpp
index 89f2345ce..4d6535325 100644
--- a/src/libs/ifc/xml/vabstractpattern.cpp
+++ b/src/libs/ifc/xml/vabstractpattern.cpp
@@ -1558,12 +1558,11 @@ void VAbstractPattern::InsertTag(const QStringList &tags, const QDomElement &ele
     for (int i = tags.indexOf(element.tagName())-1; i >= 0; --i)
     {
         const QDomNodeList list = elementsByTagName(tags.at(i));
-        if (list.isEmpty())
+        if (not list.isEmpty())
         {
-            continue;
+            pattern.insertAfter(element, list.at(0));
+            break;
         }
-        pattern.insertAfter(element, list.at(0));
-        break;
     }
     SetVersion();
 }
diff --git a/src/libs/ifc/xml/vpatternconverter.cpp b/src/libs/ifc/xml/vpatternconverter.cpp
index 6906379fb..aafd32345 100644
--- a/src/libs/ifc/xml/vpatternconverter.cpp
+++ b/src/libs/ifc/xml/vpatternconverter.cpp
@@ -212,6 +212,7 @@ QString VPatternConverter::XSDSchema(int ver) const
             InvalidVersion(ver);
             break;
     }
+    return QString();//unreachable code
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/ifc/xml/vtoolrecord.cpp b/src/libs/ifc/xml/vtoolrecord.cpp
index 4202c1f6e..29613afc4 100644
--- a/src/libs/ifc/xml/vtoolrecord.cpp
+++ b/src/libs/ifc/xml/vtoolrecord.cpp
@@ -62,6 +62,11 @@ bool VToolRecord::operator==(const VToolRecord &record) const
 //---------------------------------------------------------------------------------------------------------------------
 VToolRecord &VToolRecord::operator=(const VToolRecord &record)
 {
+    if ( &record == this )
+    {
+        return *this;
+    }
+
     this->id = record.getId();
     this->typeTool = record.getTypeTool();
     this->nameDraw = record.getNameDraw();
diff --git a/src/libs/ifc/xml/vvitconverter.cpp b/src/libs/ifc/xml/vvitconverter.cpp
index abf2f66ab..f33157411 100644
--- a/src/libs/ifc/xml/vvitconverter.cpp
+++ b/src/libs/ifc/xml/vvitconverter.cpp
@@ -92,6 +92,7 @@ QString VVITConverter::XSDSchema(int ver) const
             InvalidVersion(ver);
             break;
     }
+    return QString();//unreachable code
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/ifc/xml/vvstconverter.cpp b/src/libs/ifc/xml/vvstconverter.cpp
index a23a21280..5cc95dc4f 100644
--- a/src/libs/ifc/xml/vvstconverter.cpp
+++ b/src/libs/ifc/xml/vvstconverter.cpp
@@ -94,6 +94,7 @@ QString VVSTConverter::XSDSchema(int ver) const
             InvalidVersion(ver);
             break;
     }
+    return QString();//unreachable code
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vtools/dialogs/tools/piece/dialogseamallowance.cpp b/src/libs/vtools/dialogs/tools/piece/dialogseamallowance.cpp
index b5af43c71..7fb12683a 100644
--- a/src/libs/vtools/dialogs/tools/piece/dialogseamallowance.cpp
+++ b/src/libs/vtools/dialogs/tools/piece/dialogseamallowance.cpp
@@ -46,7 +46,7 @@
 #include <QTimer>
 #include <QtNumeric>
 
-enum TabOrder {Paths=0, Labels=1, Grainline=2, Pins=3, Count};
+enum TabOrder {Paths=0, Labels=1, Grainline=2, Pins=3, Count=4};
 
 namespace
 {