diff --git a/Gui/AboutWindow.cpp b/Gui/AboutWindow.cpp
index 48f855fb0c..7e741c61fc 100644
--- a/Gui/AboutWindow.cpp
+++ b/Gui/AboutWindow.cpp
@@ -322,33 +322,40 @@ AboutWindow::AboutWindow(QWidget* parent)
         //#define MAC_OS_X_VERSION_10_11_2    101102
         //#define MAC_OS_X_VERSION_10_11_3    101103
         //#define MAC_OS_X_VERSION_10_11_4    101104
-        osVer += QString::fromUtf8(" %1.%2.%3-%4.%5.%6")
+        //#define MAC_OS_X_VERSION_10_12      101200
+        //#define MAC_OS_X_VERSION_10_12_1    101201
+        //#define MAC_OS_X_VERSION_10_12_2    101202
+        //#define MAC_OS_X_VERSION_10_12_4    101204
+        //#define MAC_OS_X_VERSION_10_13      101300
+        //#define MAC_OS_X_VERSION_10_13_1    101301
+        //#define MAC_OS_X_VERSION_10_13_2    101302
+        //#define MAC_OS_X_VERSION_10_13_4    101304
+        //#define MAC_OS_X_VERSION_10_14      101400
+        //#define MAC_OS_X_VERSION_10_14_1    101401
+        //#define MAC_OS_X_VERSION_10_14_4    101404
+        //#define MAC_OS_X_VERSION_10_15      101500
+        //#define MAC_OS_VERSION_11_0         110000
+        //#define MAC_OS_VERSION_11_1         110100
+        //#define MAC_OS_VERSION_11_3         110300
+        const bool version_available = true;
 #if MAC_OS_X_VERSION_MIN_REQUIRED < 100000
-        .arg(MAC_OS_X_VERSION_MIN_REQUIRED / 100)
-        .arg( (MAC_OS_X_VERSION_MIN_REQUIRED % 100) / 10)
-        .arg(MAC_OS_X_VERSION_MIN_REQUIRED % 10)
+        const unsigned major = MAC_OS_X_VERSION_MIN_REQUIRED / 100;
+        const unsigned minor = (MAC_OS_X_VERSION_MIN_REQUIRED % 100) / 10;
+        const unsigned patch = MAC_OS_X_VERSION_MIN_REQUIRED % 10;
 #else
-        .arg(MAC_OS_X_VERSION_MIN_REQUIRED / 10000)
-        .arg((MAC_OS_X_VERSION_MIN_REQUIRED % 10000) / 100)
-        .arg(MAC_OS_X_VERSION_MIN_REQUIRED % 100)
+        const unsigned major = MAC_OS_X_VERSION_MIN_REQUIRED / 10000;
+        const unsigned minor = (MAC_OS_X_VERSION_MIN_REQUIRED % 10000) / 100;
+        const unsigned patch = MAC_OS_X_VERSION_MIN_REQUIRED % 100;
 #endif
-#if MAC_OS_X_VERSION_MAX_ALLOWED < 100000
-        .arg(MAC_OS_X_VERSION_MAX_ALLOWED / 100)
-        .arg( (MAC_OS_X_VERSION_MAX_ALLOWED % 100) / 10)
-        .arg(MAC_OS_X_VERSION_MAX_ALLOWED % 10)
-#else
-        .arg(MAC_OS_X_VERSION_MAX_ALLOWED / 10000)
-        .arg((MAC_OS_X_VERSION_MAX_ALLOWED % 10000) / 100)
-        .arg(MAC_OS_X_VERSION_MAX_ALLOWED % 100)
-#endif
-        ;
 #else
         //#define BOOST_VERSION_NUMBER(major,minor,patch) ( (((major)%100)*10000000) + (((minor)%100)*100000) + ((patch)%100000) )
+        const bool version_available = BOOST_OS != BOOST_VERSION_NUMBER_NOT_AVAILABLE;
         const unsigned major = BOOST_OS/10000000;
         const unsigned minor = (BOOST_OS-10000000*major)/100000;
         const unsigned patch = BOOST_OS % 100000;
+#endif
         // coverity[unsigned_compare]
-        if (BOOST_OS != BOOST_VERSION_NUMBER_NOT_AVAILABLE && major > 0) {
+        if (version_available && major > 0) {
             osVer += QString::fromUtf8(" %1").arg(major);
             // coverity[unsigned_compare]
             if (minor > 0 || patch > 0) {
@@ -358,7 +365,6 @@ AboutWindow::AboutWindow(QWidget* parent)
                 }
             }
         }
-#endif
         QString gitStr = QString::fromUtf8("<p>%1</p>").arg(tr("This software was compiled from the source "
                                                                "code branch %1 at version %2 using %3 targeting %4 for %5.")
                                                             .arg( QString::fromUtf8("<a href=\"https://github.com/NatronGitHub/Natron/tree/" GIT_BRANCH "\">" GIT_BRANCH "</a>") ) // %1