diff --git a/kstars/ekos/align/align.cpp b/kstars/ekos/align/align.cpp
--- a/kstars/ekos/align/align.cpp
+++ b/kstars/ekos/align/align.cpp
@@ -1039,7 +1039,7 @@
     boxNames.sort(Qt::CaseInsensitive);
     boxNames.removeDuplicates();
     greekBoxNames.removeDuplicates();
-    qSort(greekBoxNames.begin(), greekBoxNames.end(), [](const QString & a, const QString & b)
+    std::sort(greekBoxNames.begin(), greekBoxNames.end(), [](const QString & a, const QString & b)
     {
         QStringList aParts = a.split(' ');
         QStringList bParts = b.split(' ');
diff --git a/kstars/ekos/guide/internalguide/internalguider.cpp b/kstars/ekos/guide/internalguide/internalguider.cpp
--- a/kstars/ekos/guide/internalguide/internalguider.cpp
+++ b/kstars/ekos/guide/internalguide/internalguider.cpp
@@ -1190,9 +1190,9 @@
             useNativeDetection = true;
             // For SEP, prefer flux total
             if (Options::guideAlgorithm() == SEP_THRESHOLD)
-                qSort(starCenters.begin(), starCenters.end(), [](const Edge *a, const Edge *b) { return a->val > b->val; });
+                std::sort(starCenters.begin(), starCenters.end(), [](const Edge *a, const Edge *b) { return a->val > b->val; });
             else
-                qSort(starCenters.begin(), starCenters.end(), [](const Edge *a, const Edge *b) { return a->width > b->width; });
+                std::sort(starCenters.begin(), starCenters.end(), [](const Edge *a, const Edge *b) { return a->width > b->width; });
 
             guideFrame->setStarsEnabled(true);
             guideFrame->updateFrame();