diff --git a/src/app/tape/tape.pro b/src/app/tape/tape.pro
index f12b0dfc9..4a9d5d74d 100644
--- a/src/app/tape/tape.pro
+++ b/src/app/tape/tape.pro
@@ -201,6 +201,7 @@ unix{
         QMAKE_MAC_SDK = macosx
 
         # Check which minimal OSX version supports current Qt version
+        # See page https://doc.qt.io/qt-5/supported-platforms-and-configurations.html
         equals(QT_MAJOR_VERSION, 5):greaterThan(QT_MINOR_VERSION, 6) {
             QMAKE_MACOSX_DEPLOYMENT_TARGET = 10.8
         } else {
diff --git a/src/app/valentina/valentina.pro b/src/app/valentina/valentina.pro
index faff1b32a..b50aed793 100644
--- a/src/app/valentina/valentina.pro
+++ b/src/app/valentina/valentina.pro
@@ -204,6 +204,7 @@ unix{
         QMAKE_MAC_SDK = macosx
 
         # Check which minimal OSX version supports current Qt version
+        # See page https://doc.qt.io/qt-5/supported-platforms-and-configurations.html
         equals(QT_MAJOR_VERSION, 5):greaterThan(QT_MINOR_VERSION, 6) {
             QMAKE_MACOSX_DEPLOYMENT_TARGET = 10.8
         } else {