diff -Naur legacy.old/avi.cc legacy/avi.cc
--- legacy.old/avi.cc	2004-12-08 10:04:25.542512952 +0100
+++ legacy/avi.cc	2004-12-08 10:04:51.154619320 +0100
@@ -84,6 +84,7 @@
 #include <iostream>
 #include <strstream>
 #include <iomanip>
+#include <cassert>
 
 using std::cout;
 using std::hex;
diff -Naur legacy.old/filehandler.cc legacy/filehandler.cc
--- legacy.old/filehandler.cc	2004-12-08 10:04:25.543512800 +0100
+++ legacy/filehandler.cc	2004-12-08 10:05:06.013360448 +0100
@@ -25,6 +25,7 @@
 #include <iostream>
 #include <strstream>
 #include <iomanip>
+#include <cassert>
 
 using std::cerr;
 using std::cout;
diff -Naur legacy.old/riff.cc legacy/riff.cc
--- legacy.old/riff.cc	2004-12-08 10:04:25.541513104 +0100
+++ legacy/riff.cc	2004-12-08 10:05:16.543759584 +0100
@@ -55,6 +55,7 @@
 #include <iostream>
 #include <strstream>
 #include <iomanip>
+#include <cassert>
 
 using std::cout;
 using std::hex;