diff --git a/sc2/ChangeLog b/sc2/ChangeLog
index 2e3dda957..94b8eeae1 100644
--- a/sc2/ChangeLog
+++ b/sc2/ChangeLog
@@ -1,4 +1,5 @@
 Changes towards version 0.7:
+- Flush write buffer when doing a uio_close() after a uio_fwrite() - SvdB
 - Major rewrite of the SwapBuffers commands -- screen compositing logic 
   has all been abstracted out into sdl_common.c instead of being 
   nearly-duplicated in opengl.c and pure.c - Michael
diff --git a/sc2/src/sc2code/libs/uio/uiostream.c b/sc2/src/sc2code/libs/uio/uiostream.c
index 77842bfd3..f1b9852c5 100644
--- a/sc2/src/sc2code/libs/uio/uiostream.c
+++ b/sc2/src/sc2code/libs/uio/uiostream.c
@@ -356,6 +356,7 @@ uio_fwrite(const void *buf, size_t size, size_t nmemb, uio_Stream *stream) {
 	ssize_t bytesWritten;
 
 	uio_assertWriteSanity(stream);
+	stream->operation = uio_StreamOperation_write;
 	
 	// NB. If a file is opened in append mode, the file position indicator
 	// is moved to the end of the file before writing.