diff --git a/package/qt6/qt6serialport/qt6serialport.mk b/package/qt6/qt6serialport/qt6serialport.mk
index 497719d4ec..bdb16dd892 100644
--- a/package/qt6/qt6serialport/qt6serialport.mk
+++ b/package/qt6/qt6serialport/qt6serialport.mk
@@ -10,6 +10,8 @@ QT6SERIALPORT_SOURCE = qtserialport-$(QT6_SOURCE_TARBALL_PREFIX)-$(QT6SERIALPORT
 QT6SERIALPORT_INSTALL_STAGING = YES
 QT6SERIALPORT_SUPPORTS_IN_SOURCE_BUILD = NO
 
+QT6SERIALPORT_CMAKE_BACKEND = ninja
+
 QT6SERIALPORT_LICENSE = \
 	GPL-2.0+ or LGPL-3.0, \
 	GPL-3.0 with exception (tools), \
@@ -25,7 +27,6 @@ QT6SERIALPORT_LICENSE_FILES = \
 	LICENSES/Qt-GPL-exception-1.0.txt
 
 QT6SERIALPORT_CONF_OPTS = \
-	-GNinja \
 	-DQT_HOST_PATH=$(HOST_DIR) \
 	-DBUILD_WITH_PCH=OFF \
 	-DQT_BUILD_EXAMPLES=OFF \
@@ -33,19 +34,6 @@ QT6SERIALPORT_CONF_OPTS = \
 
 QT6SERIALPORT_DEPENDENCIES = \
 	host-pkgconf \
-	host-ninja \
 	qt6base
 
-define QT6SERIALPORT_BUILD_CMDS
-	$(TARGET_MAKE_ENV) $(BR2_CMAKE) --build $(QT6SERIALPORT_BUILDDIR)
-endef
-
-define QT6SERIALPORT_INSTALL_STAGING_CMDS
-	$(TARGET_MAKE_ENV) DESTDIR=$(STAGING_DIR) $(BR2_CMAKE) --install $(QT6SERIALPORT_BUILDDIR)
-endef
-
-define QT6SERIALPORT_INSTALL_TARGET_CMDS
-	$(TARGET_MAKE_ENV) DESTDIR=$(TARGET_DIR) $(BR2_CMAKE) --install $(QT6SERIALPORT_BUILDDIR)
-endef
-
 $(eval $(cmake-package))