diff --git a/anaglym.cc b/anaglym.cc
index d1891f4..45b1c4b 100644
--- a/anaglym.cc
+++ b/anaglym.cc
@@ -3,7 +3,7 @@
 #include "anaglym.h"
 #include "Engine.h"
 #include "SDL.h"
-#include <stdlib.h>                 /* exit() */
+#include <stdlib.h>                 /* exit(), srand() */
 #include <iostream>
 #include <string>
 using namespace std;
@@ -69,6 +69,8 @@ int main(int argc, char * argv[])
         usage();
     }
 
+    srand(time(NULL));
+
     Video video;
     video.start(width, height, fullscreen, grab_input);