diff --git a/changelog.txt b/changelog.txt
index 3d0f38c2..7d85879c 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,4 @@
+01-march-2010 - adelikat - Movie file format header now has a FDS flag
 01-march-2010 - adelikat - win32 - cheats dialog - toggling a cheat in the cheats list now updates the active cheats count
 01-march-2010 - adelikat - win32 - a disable movie messages menu item
 25-feb-2010 - prockguy - unix netplay is now functional; gtk network gui created
diff --git a/src/fds.cpp b/src/fds.cpp
index 7ee3075e..300fa576 100644
--- a/src/fds.cpp
+++ b/src/fds.cpp
@@ -43,6 +43,8 @@
 //	when the virtual motor is on(mmm...virtual motor).
 extern int disableBatteryLoading; 
 
+bool isFDS = false;	//flag for determining if a FDS game is loaded, movie.cpp needs this
+
 static DECLFR(FDSRead4030);
 static DECLFR(FDSRead4031);
 static DECLFR(FDSRead4032);
@@ -833,6 +835,7 @@ int FDSLoad(const char *name, FCEUFILE *fp)
 
 	GameInfo->type=GIT_FDS;
 	GameInterface=FDSGI;
+	isFDS = true;
 
 	SelectDisk=0;
 	InDisk=255;
@@ -877,6 +880,7 @@ void FDSClose(void)
 {
 	FILE *fp;
 	int x;
+	isFDS = false;
 	char *fn=strdup(FCEU_MakeFName(FCEUMKF_FDS,0,0).c_str());
 
 	if(!DiskWritten) return;
diff --git a/src/fds.h b/src/fds.h
index 4269d70f..ded2e3ec 100644
--- a/src/fds.h
+++ b/src/fds.h
@@ -1,3 +1,4 @@
+extern bool isFDS;
 void FDSSoundReset(void);
 
 void FCEU_FDSInsert(void);
diff --git a/src/movie.cpp b/src/movie.cpp
index 0f34abd3..9bebcf43 100644
--- a/src/movie.cpp
+++ b/src/movie.cpp
@@ -344,6 +344,8 @@ void MovieData::truncateAt(int frame)
 void MovieData::installValue(std::string& key, std::string& val)
 {
 	//todo - use another config system, or drive this from a little data structure. because this is gross
+	if(key == "FDS")
+		installInt(val,fds);
 	if(key == "version")
 		installInt(val,version);
 	else if(key == "emuVersion")
@@ -402,6 +404,7 @@ int MovieData::dump(std::ostream *os, bool binary)
 	*os << "port0 " << ports[0] << endl;
 	*os << "port1 " << ports[1] << endl;
 	*os << "port2 " << ports[2] << endl;
+	*os << "FDS " << isFDS << endl;
 
 	for(uint32 i=0;i<comments.size();i++)
 		*os << "comment " << wcstombs(comments[i]) << endl;
diff --git a/src/movie.h b/src/movie.h
index 380e3e82..92076426 100644
--- a/src/movie.h
+++ b/src/movie.h
@@ -161,6 +161,7 @@ public:
 
 	int version;
 	int emuVersion;
+	int fds;
 	//todo - somehow force mutual exclusion for poweron and reset (with an error in the parser)
 	bool palFlag;
 	MD5DATA romChecksum;