diff --git a/lib/crop/cropwidget.cpp b/lib/crop/cropwidget.cpp
--- a/lib/crop/cropwidget.cpp
+++ b/lib/crop/cropwidget.cpp
@@ -72,6 +72,14 @@
         return cropRatio() > 0;
     }
 
+    QSize imageRatio()
+    {
+        const int width = mDocument->width();
+        const int height = mDocument->height();
+        const int divisor = gcd(width, height);
+        return QSize(width / divisor, height / divisor);
+    }
+
     double cropRatio() const
     {
         int index = ratioComboBox->currentIndex();
@@ -137,6 +145,10 @@
                 << QSizeF(4, 3)
                 << QSizeF(5, 4);
 
+        // First item added is index 0 therefore is default
+        addRatioToComboBox(imageRatio(), i18n("Current Image"));
+        // Size of 0 means ratioIsConstrained returns false
+        addRatioToComboBox(QSize(0, 0), i18n("Freeform"));
         addRatioToComboBox(QSizeF(1, 1), i18n("Square"));
         addRatioToComboBox(screenRatio(), i18n("This Screen"));
         addSectionHeaderToComboBox(i18n("Landscape"));
@@ -162,6 +174,8 @@
         // Do not use i18n("%1:%2") because ':' should not be translated, it is
         // used to parse the ratio string.
         edit->setPlaceholderText(QString("%1:%2").arg(i18n("Width")).arg(i18n("Height")));
+
+        ratioComboBox->setCurrentIndex(0);
     }
 
     QRect cropRect() const
@@ -225,6 +239,8 @@
     d->initDialogButtonBox();
 
     connect(d->ratioComboBox, &QComboBox::editTextChanged, this, &CropWidget::slotRatioComboBoxEditTextChanged);
+    // Call this once manually so default ratio is applied
+    applyRatioConstraint();
 
     // Don't do this before signals are connected, otherwise the tool won't get
     // initialized