diff --git a/development/pgmodeler/pgmodeler.SlackBuild b/development/pgmodeler/pgmodeler.SlackBuild
index 53bd30dc7cb..44a8a19fb48 100644
--- a/development/pgmodeler/pgmodeler.SlackBuild
+++ b/development/pgmodeler/pgmodeler.SlackBuild
@@ -38,9 +38,6 @@ if [ -z "$ARCH" ]; then
   esac
 fi
 
-# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
-# the name of the created package would be, and then exit. This information
-# could be useful to other scripts.
 if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
   echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
   exit 0
@@ -79,6 +76,9 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
  -exec chmod 644 {} \;
 
+# source manually
+. /etc/profile.d/qt6.sh
+
 qmake6 \
   QMAKE_CFLAGS+="$SLKCFLAGS" \
   QMAKE_CXXFLAGS+="$SLKCFLAGS" \