diff --git a/Makefile b/Makefile
index afc62c9..aebe467 100644
--- a/Makefile
+++ b/Makefile
@@ -73,6 +73,7 @@
     # these are our registry-based factories
 	SRC_LIST += src/images/SkImageDecoder_Factory.cpp
 	SRC_LIST += src/images/SkImageEncoder_Factory.cpp
+        SRC_LIST += src/images/SkImageDecoder_libpng.cpp
     # support files
 	SRC_LIST += src/images/SkScaledBitmapSampler.cpp
 endif
diff --git a/tools/skhello.cpp b/tools/skhello.cpp
index 6f56d4c..179c3da 100644
--- a/tools/skhello.cpp
+++ b/tools/skhello.cpp
@@ -57,9 +57,11 @@
                     SkIntToScalar(w)/2, SkIntToScalar(h)*2/3,
                     paint);
 
-    SkImageEncoder::EncodeFile(path.c_str(), bitmap,
+    bool success = SkImageEncoder::EncodeFile(path.c_str(), bitmap,
                                SkImageEncoder::kPNG_Type, 100);
-
-    return 0;
+    if (!success) {
+        SkDebugf("--- failed to write %s\n", path.c_str());
+    }
+    return !success;
 }