diff --git a/pcsx2/Elfheader.cpp b/pcsx2/Elfheader.cpp
index be4098e6ed..8fb308062c 100644
--- a/pcsx2/Elfheader.cpp
+++ b/pcsx2/Elfheader.cpp
@@ -26,7 +26,7 @@ std::pair<u32,u32> ElfTextRange;
 wxString LastELF;
 
 // All of ElfObjects functions.
-ElfObject::ElfObject(const wxString& srcfile, IsoFile isofile)
+ElfObject::ElfObject(const wxString& srcfile, IsoFile& isofile)
 	: data( wxULongLong(isofile.getLength()).GetLo(), L"ELF headers" )
 	, proghead( NULL )
 	, secthead( NULL )
@@ -138,7 +138,7 @@ std::pair<u32,u32> ElfObject::getTextRange()
 	return std::make_pair(0,0);
 }
 
-void ElfObject::readIso(IsoFile file)
+void ElfObject::readIso(IsoFile& file)
 {
 	int rsize = file.read(data.GetPtr(), data.GetSizeInBytes());
 	if (rsize < data.GetSizeInBytes()) throw Exception::EndOfStream(filename);
diff --git a/pcsx2/Elfheader.h b/pcsx2/Elfheader.h
index 2603a06d9b..3ee81ad15a 100644
--- a/pcsx2/Elfheader.h
+++ b/pcsx2/Elfheader.h
@@ -132,7 +132,7 @@ class ElfObject
 		wxString filename;
 
 		void initElfHeaders();
-		void readIso(IsoFile file);
+		void readIso(IsoFile& file);
 		void readFile();
 		void checkElfSize(s64 elfsize);
 
@@ -144,7 +144,7 @@ class ElfObject
 		// C++ does all the cleanup automagically for us.
 		virtual ~ElfObject() throw() { }
 
-		ElfObject(const wxString& srcfile, IsoFile isofile);
+		ElfObject(const wxString& srcfile, IsoFile& isofile);
 		ElfObject( const wxString& srcfile, uint hdrsize );
 
 		void loadProgramHeaders();