diff --git a/functions.sh b/functions.sh
index 396b49b..7ebd43a 100644
--- a/functions.sh
+++ b/functions.sh
@@ -232,13 +232,16 @@ function commandIsWorking {
 }
 
 # ok if given pattern is detected on command's stdout or stderr
-# arg1: command
-# arg2: pattern
+# arg1: chroot
+# arg2: command
+# arg3: pattern
 function commandStdoutPattern {
-  command=$1
+  chroot=$1
+  command=$2
   shift
   pattern=$@
-  if ( $command 2>&1 | grep -qiE "${pattern}" ) ; then echo -ne "1;" ; else echo -ne "0;" ; fi
+  result=$(chroot ${chroot} bash -c "$command")
+  if ( echo -n "$result" | grep -qiE "${pattern}" ) ; then echo -ne "1;" ; else echo -ne "0;" ; fi
 }
 
 # ok if given service is enabled