diff --git a/Xorg/lib/qt4/Makefile b/Xorg/lib/qt4/Makefile
index cf9ca14cd..31c660a9a 100644
--- a/Xorg/lib/qt4/Makefile
+++ b/Xorg/lib/qt4/Makefile
@@ -300,6 +300,9 @@ define Build/Configure
 		TARGET_LDFLAGS="$(TARGET_LDFLAGS) $(EXTRA_LDFLAGS)" \
 		TARGET_INCDIRS="$(TARGET_INCDIRS)" \
 		TARGET_LIBDIRS="$(TARGET_LIBDIRS)" \
+		CFLAGS= \
+		CXXFLAGS= \
+		LDFLAGS= \
 		STAGING_DIR="$(STAGING_DIR)" \
 		STAGING_DIR_HOST="$(STAGING_DIR)/../host" \
 		./configure \