diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index df303b8..54d949d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -134,8 +134,10 @@ jobs:
           cp src/icons/class.png AppDir/usr/share/icons/hicolor/256x256/apps/reclass.png
 
           # Create AppImage with Qt libs bundled
-          export QMAKE=$Qt6_DIR/bin/qmake
-          export LD_LIBRARY_PATH=$Qt6_DIR/lib:$LD_LIBRARY_PATH
+          # Qt6_DIR points to cmake config dir; derive the Qt root from it
+          QT_ROOT=$(cd "$Qt6_DIR/../../.." && pwd)
+          export QMAKE="$QT_ROOT/bin/qmake"
+          export LD_LIBRARY_PATH="$QT_ROOT/lib:$LD_LIBRARY_PATH"
           export EXTRA_QT_PLUGINS="svg;iconengines"
           ./linuxdeploy-x86_64.AppImage --appdir AppDir \
             --desktop-file deploy/Reclass.desktop \