diff --git a/include/osgDB/FileNameUtils b/include/osgDB/FileNameUtils
index 944101a1a..234bec22f 100644
--- a/include/osgDB/FileNameUtils
+++ b/include/osgDB/FileNameUtils
@@ -22,6 +22,7 @@ namespace osgDB {
 
 extern OSGDB_EXPORT std::string getFilePath(const std::string& filename);
 extern OSGDB_EXPORT std::string getFileExtension(const std::string& filename);
+extern OSGDB_EXPORT std::string getFileExtensionIncludingDot(const std::string& filename);
 extern OSGDB_EXPORT std::string getLowerCaseFileExtension(const std::string& filename);
 extern OSGDB_EXPORT std::string getSimpleFileName(const std::string& fileName);
 extern OSGDB_EXPORT std::string getNameLessExtension(const std::string& fileName);
diff --git a/src/osgDB/FileNameUtils.cpp b/src/osgDB/FileNameUtils.cpp
index b8cc4c1c2..605fc94dc 100644
--- a/src/osgDB/FileNameUtils.cpp
+++ b/src/osgDB/FileNameUtils.cpp
@@ -66,6 +66,13 @@ std::string osgDB::getFileExtension(const std::string& fileName)
     return std::string(fileName.begin()+dot+1,fileName.end());
 }
 
+std::string osgDB::getFileExtensionIncludingDot(const std::string& fileName)
+{
+    std::string::size_type dot = fileName.find_last_of('.');
+    if (dot==std::string::npos) return std::string("");
+    return std::string(fileName.begin()+dot,fileName.end());
+}
+
 std::string osgDB::convertFileNameToWindowsStyle(const std::string& fileName)
 {
     std::string new_fileName(fileName);