diff --git a/ChangeLog.txt b/ChangeLog.txt
index eddd706a7..f8dc94429 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -7,6 +7,7 @@
 - New option "Don't use the native file dialog".
 - Improve the layout option "Auto crop unused width".
 - Improve multisize measurements format. Allow decimal step 0.5.
+- Improve restrict dimension dialog. Disable not available combinations.
 
 # Version 0.7.41 Dec 4, 2020
 - Bug fixes.
diff --git a/src/app/tape/dialogs/dialogrestrictdimension.cpp b/src/app/tape/dialogs/dialogrestrictdimension.cpp
index 9914365d0..84401cd70 100644
--- a/src/app/tape/dialogs/dialogrestrictdimension.cpp
+++ b/src/app/tape/dialogs/dialogrestrictdimension.cpp
@@ -387,7 +387,7 @@ void DialogRestrictDimension::InitTable()
     ui->tableWidget->blockSignals(false);
 
     RefreshTable();
-    ui->tableWidget->selectRow(0);
+    ui->tableWidget->selectRow(StartRow());
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -415,11 +415,11 @@ void DialogRestrictDimension::RefreshTable()
     {
         if (m_dimensions.size() >= 3)
         {
-            MeasurementDimension_p dimensionA = m_dimensions.at(1);
-            basesRow = dimensionA->ValidBases();
+            MeasurementDimension_p dimensionB = m_dimensions.at(1);
+            basesRow = dimensionB->ValidBases();
 
-            MeasurementDimension_p dimensionB = m_dimensions.at(2);
-            basesColumn = dimensionB->ValidBases();
+            MeasurementDimension_p dimensionC = m_dimensions.at(2);
+            basesColumn = dimensionC->ValidBases();
         }
         else
         {
@@ -454,6 +454,7 @@ void DialogRestrictDimension::AddCell(int row, int column, qreal rowValue, qreal
     qreal base2 = 0;
     MeasurementDimension_p dimension;
     QVector<qreal> bases;
+    QVector<qreal> validRows;
 
     if (m_oneDimesionRestriction)
     {
@@ -461,6 +462,7 @@ void DialogRestrictDimension::AddCell(int row, int column, qreal rowValue, qreal
 
         if (m_dimensions.size() >= 2)
         {
+            validRows = m_dimensions.at(0)->ValidBases();
             dimension = m_dimensions.at(1);
             bases = dimension->ValidBases();
         }
@@ -472,6 +474,7 @@ void DialogRestrictDimension::AddCell(int row, int column, qreal rowValue, qreal
 
         if (m_dimensions.size() >= 3)
         {
+            validRows = DimensionRestrictedValues(m_dimensions.at(1));
             dimension = m_dimensions.at(2);
             bases = dimension->ValidBases();
         }
@@ -494,16 +497,27 @@ void DialogRestrictDimension::AddCell(int row, int column, qreal rowValue, qreal
         }
     }
 
-    const bool leftRestriction = columnValue >= min;
-    const bool rightRestriction = columnValue <= max;
-
-    if (leftRestriction && rightRestriction)
+    if (validRows.contains(rowValue))
     {
-        item->setIcon(QIcon(QStringLiteral("://icon/24x24/star.png")));
+        const bool leftRestriction = columnValue >= min;
+        const bool rightRestriction = columnValue <= max;
+
+        if (leftRestriction && rightRestriction)
+        {
+            item->setIcon(QIcon(QStringLiteral("://icon/24x24/star.png")));
+        }
+        else
+        {
+            item->setIcon(QIcon(QStringLiteral("://icon/24x24/close.png")));
+        }
     }
     else
     {
         item->setIcon(QIcon(QStringLiteral("://icon/24x24/close.png")));
+
+        Qt::ItemFlags flags = item->flags();
+        flags &= ~(Qt::ItemIsEnabled);
+        item->setFlags(flags);
     }
 
     // set the item non-editable (view only), and non-selectable
@@ -653,3 +667,57 @@ auto DialogRestrictDimension::DimensionLabels(const QVector<qreal> &bases,
 
     return labels;
 }
+
+//---------------------------------------------------------------------------------------------------------------------
+auto DialogRestrictDimension::DimensionRestrictedValues(const MeasurementDimension_p &dimension) const -> QVector<qreal>
+{
+    QPair<qreal, qreal> restriction;
+
+    if (not m_oneDimesionRestriction)
+    {
+        qreal base1 = ui->comboBoxDimensionA->currentData().toDouble();
+        restriction = m_restrictions.value(VMeasurement::CorrectionHash(base1), QPair<qreal, qreal>(0, 0));
+    }
+
+    const QVector<qreal> bases = dimension->ValidBases();
+
+    qreal min = bases.indexOf(restriction.first) != -1 ? restriction.first : dimension->MinValue();
+    qreal max = bases.indexOf(restriction.second) != -1 ? restriction.second : dimension->MaxValue();
+
+    if (min > max)
+    {
+        min = dimension->MinValue();
+        max = dimension->MaxValue();
+    }
+
+    return VAbstartMeasurementDimension::ValidBases(min, max, dimension->Step());
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+auto DialogRestrictDimension::StartRow() const -> int
+{
+    if (m_oneDimesionRestriction)
+    {
+        return 0;
+    }
+
+    QVector<qreal> basesRow;
+
+    if (m_dimensions.size() >= 3)
+    {
+        MeasurementDimension_p dimensionB = m_dimensions.at(1);
+        basesRow = dimensionB->ValidBases();
+
+        QVector<qreal> validRows = DimensionRestrictedValues(dimensionB);
+
+        for(int i=0; i < basesRow.size(); ++i)
+        {
+            if (validRows.contains(basesRow.at(i)))
+            {
+                return i;
+            }
+        }
+    }
+
+    return 0;
+}
diff --git a/src/app/tape/dialogs/dialogrestrictdimension.h b/src/app/tape/dialogs/dialogrestrictdimension.h
index 4edd3e6f6..cb7614a10 100644
--- a/src/app/tape/dialogs/dialogrestrictdimension.h
+++ b/src/app/tape/dialogs/dialogrestrictdimension.h
@@ -84,6 +84,8 @@ private:
     void FillBases(const QVector<qreal> &bases, const MeasurementDimension_p &dimension, QComboBox *control) const;
 
     auto DimensionLabels(const QVector<qreal> &bases, const MeasurementDimension_p &dimension) const -> QStringList;
+    auto DimensionRestrictedValues(const MeasurementDimension_p &dimension) const -> QVector<qreal>;
+    auto StartRow() const -> int;
 };
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vwidgets/vdecorationaligningdelegate.cpp b/src/libs/vwidgets/vdecorationaligningdelegate.cpp
index f81974444..e023be109 100644
--- a/src/libs/vwidgets/vdecorationaligningdelegate.cpp
+++ b/src/libs/vwidgets/vdecorationaligningdelegate.cpp
@@ -39,10 +39,17 @@ void VDecorationAligningDelegate::paint(QPainter *painter, const QStyleOptionVie
 {
     QIcon icon = QIcon(qvariant_cast<QIcon>(index.data(Qt::DecorationRole)));
 
-    if (option.state & QStyle::State_Selected)
+    if ((option.state & QStyle::State_Selected) != 0U)
     {
         painter->fillRect(option.rect, option.palette.highlight());
     }
 
-    icon.paint(painter, option.rect, m_alignment);
+    if ((index.flags() & Qt::ItemIsEnabled) != 0U)
+    {
+        icon.paint(painter, option.rect, m_alignment);
+    }
+    else
+    {
+        icon.paint(painter, option.rect, m_alignment, QIcon::Disabled);
+    }
 }