diff --git a/src/osgPlugins/flt/ReaderWriterFLT.cpp b/src/osgPlugins/flt/ReaderWriterFLT.cpp
index 73874c1e9..56ea03c41 100644
--- a/src/osgPlugins/flt/ReaderWriterFLT.cpp
+++ b/src/osgPlugins/flt/ReaderWriterFLT.cpp
@@ -23,7 +23,7 @@ osgDB::ReaderWriter::ReadResult ReaderWriterFLT::readObject(const std::string& f
 osgDB::ReaderWriter::ReadResult ReaderWriterFLT::readNode(const std::string& fileName, const osgDB::ReaderWriter::Options*)
 {
     if( !acceptsExtension(osgDB::getFileExtension(fileName) ))
-    return ReadResult::FILE_NOT_HANDLED;
+        return ReadResult::FILE_NOT_HANDLED;
 
     osg::ref_ptr<FltFile> read = new FltFile;
 
diff --git a/src/osgPlugins/png/ReaderWriterPNG.cpp b/src/osgPlugins/png/ReaderWriterPNG.cpp
index 59ee8b143..c13dd1e8b 100644
--- a/src/osgPlugins/png/ReaderWriterPNG.cpp
+++ b/src/osgPlugins/png/ReaderWriterPNG.cpp
@@ -1,9 +1,10 @@
 #include <osg/Image>
 #include "osg/Notify"
 #include <osg/Geode>
-#include "osg/GL"
+#include <osg/GL>
 
-#include "osgDB/Registry"
+#include <osgDB/Registry>
+#include <osgDB/FileNameUtils>
 
 using namespace osg;
 
@@ -35,6 +36,9 @@ class ReaderWriterPNG : public osgDB::ReaderWriter
         virtual ReadResult readImage(const std::string& fileName, const osgDB::ReaderWriter::Options*)
         {
 
+            if( !acceptsExtension(osgDB::getFileExtension(fileName) ))
+                return ReadResult::FILE_NOT_HANDLED;
+
             int trans = PNG_ALPHA;
             FILE *fp = NULL;
             pngInfo pInfo;