diff --git a/koreader.sh b/koreader.sh
index 320252c6d..bb8dfa550 100755
--- a/koreader.sh
+++ b/koreader.sh
@@ -35,6 +35,9 @@ fi
 # stop cvm
 #killall -stop cvm
 
+# keep only one instance of reader
+killall reader.lua
+
 # finally call reader
 ./reader.lua "$1" 2> crash.log