diff --git a/srcpkgs/qt5-webkit/template b/srcpkgs/qt5-webkit/template
index a4719bc9000..f90c03e4f3e 100644
--- a/srcpkgs/qt5-webkit/template
+++ b/srcpkgs/qt5-webkit/template
@@ -32,7 +32,7 @@ case "$XBPS_TARGET_MACHINE" in
 		LIBS+=" -latomic"
 		;;
 	ppc64*)	# no JIT on ppc64 and other build workarounds
-		configure_args+=" ENABLE_JIT=OFF USE_SYSTEM_MALLOC=ON ENABLE_ALLINONE_BUILD=OFF"
+		configure_args+=" -DENABLE_JIT=OFF -DUSE_SYSTEM_MALLOC=ON -DENABLE_ALLINONE_BUILD=OFF"
 		;;
 esac