diff --git a/app/gui/oven_control/cookprogram.cpp b/app/gui/oven_control/cookprogram.cpp
index b9d3a92..fd81de4 100644
--- a/app/gui/oven_control/cookprogram.cpp
+++ b/app/gui/oven_control/cookprogram.cpp
@@ -472,6 +472,7 @@ void writeManual()
                << e.coreTemp << "\n";
     }
 
+    stream.flush();
     file.close();
     sync();
 }