diff --git a/.travis.yml b/.travis.yml
index e5fe18b16..27ebf1ee9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -50,9 +50,6 @@ matrix:
       env:
         - MATRIX_PLAT=mingw
 
-before_install:
-    - eval "${MATRIX_EVAL}"
-
 install:
   - git clone --branch=dev https://github.com/xmake-io/xmake.git tboox/xmake --depth 1
   - cd ./tboox/xmake
@@ -64,6 +61,7 @@ install:
     fi
 
 script:
+  - eval "${MATRIX_EVAL}"
   - if [ "$MATRIX_PLAT" = "iphoneos" ]; then
       travis_wait 60 xmake l ./scripts/test.lua -D -p iphoneos;
     elif [ "$MATRIX_PLAT" = "mingw" ]; then
diff --git a/packages/s/skia/xmake.lua b/packages/s/skia/xmake.lua
index b1ce56a95..6f0aa35c6 100644
--- a/packages/s/skia/xmake.lua
+++ b/packages/s/skia/xmake.lua
@@ -30,12 +30,7 @@ package("skia")
                       skia_use_libjpeg_turbo = false,
                       skia_use_libpng = false,
                       skia_use_libwebp = false,
-                      skia_use_zlib = false,
-                      skia_use_system_expat = false,
-                      skia_use_system_libjpeg_turbo = false,
-                      skia_use_system_libpng = false,
-                      skia_use_system_libwebp = false,
-                      skia_use_system_zlib = false}
+                      skia_use_zlib = false}
         args.cc  = package:build_getenv("cc")
         args.cxx = package:build_getenv("cxx")
         local argstr = ""
@@ -47,7 +42,7 @@ package("skia")
             end
         end 
         os.vrun("python2 tools/git-sync-deps")
-        os.vrun("bin/gn gen build --args='%s'", argstr)
+        os.vrun("bin/gn gen build --args='%s'", argstr:trim())
         os.vrun("ninja -C build")
     end)