diff --git a/render b/render
index dc4b52b..358913c 100755
--- a/render
+++ b/render
@@ -206,6 +206,10 @@ if __name__ == "__main__":
     )
     args = parser.parse_args()
 
+    # the master tex needs to be without the 'slides' path, because
+    # on the tempfs, the relative path work without
+    args.master_tex = os.path.basename(args.master_tex)
+
     logger = logging.getLogger(__name__)
 
     data = parse_config(args.configfile)