diff --git a/include/project_version.h b/include/ProjectVersion.h
similarity index 74%
rename from include/project_version.h
rename to include/ProjectVersion.h
index 4be7f15a5..7326ce3c3 100644
--- a/include/project_version.h
+++ b/include/ProjectVersion.h
@@ -1,5 +1,5 @@
 /*
- * project_version.h - version compared in import upgrades
+ * ProjectVersion.h - version compared in import upgrades
  *
  * Copyright (c) 2007 Javier Serrano Polo <jasp00/at/users.sourceforge.net>
  *
@@ -29,25 +29,25 @@
 #include <QtCore/QString>
 
 
-class projectVersion : public QString
+class ProjectVersion : public QString
 {
 public:
-	projectVersion( const QString & _s ) :
+	ProjectVersion( const QString & _s ) :
 		QString( _s )
 	{
 	}
 
-	static int compare( const projectVersion & _v1,
-						const projectVersion & _v2 );
+	static int compare( const ProjectVersion & _v1,
+						const ProjectVersion & _v2 );
 
 } ;
 
 
 
 
-inline bool operator<( const projectVersion & _v1, const char * _str )
+inline bool operator<( const ProjectVersion & _v1, const char * _str )
 {
-	return projectVersion::compare( _v1, projectVersion( _str ) ) < 0;
+	return ProjectVersion::compare( _v1, ProjectVersion( _str ) ) < 0;
 }
 
 
diff --git a/src/core/DataFile.cpp b/src/core/DataFile.cpp
index 40fda6cff..3eec74935 100644
--- a/src/core/DataFile.cpp
+++ b/src/core/DataFile.cpp
@@ -36,7 +36,7 @@
 
 
 #include "ConfigManager.h"
-#include "project_version.h"
+#include "ProjectVersion.h"
 #include "SongEditor.h"
 #include "Effect.h"
 #include "lmmsversion.h"
@@ -327,7 +327,7 @@ void DataFile::cleanMetaNodes( QDomElement _de )
 
 void DataFile::upgrade()
 {
-	projectVersion version =
+	ProjectVersion version =
 		documentElement().attribute( "creatorversion" ).
 							replace( "svn", "" );
 
diff --git a/src/core/project_version.cpp b/src/core/ProjectVersion.cpp
similarity index 90%
rename from src/core/project_version.cpp
rename to src/core/ProjectVersion.cpp
index 15b584e07..58e5ac541 100644
--- a/src/core/project_version.cpp
+++ b/src/core/ProjectVersion.cpp
@@ -1,5 +1,5 @@
 /*
- * project_version.cpp - compare versions in import upgrades
+ * ProjectVersion.cpp - compare versions in import upgrades
  *
  * Copyright (c) 2007 Javier Serrano Polo <jasp00/at/users.sourceforge.net>
  * Copyright (c) 2008 Tobias Doerffel <tobydox/at/users.sourceforge.net>
@@ -26,13 +26,13 @@
 
 
 
-#include "project_version.h"
+#include "ProjectVersion.h"
 
 
 
 
-int projectVersion::compare( const projectVersion & _v1,
-						const projectVersion & _v2 )
+int ProjectVersion::compare( const ProjectVersion & _v1,
+						const ProjectVersion & _v2 )
 {
 	int n1, n2;