Signed-off-by: Jonatan Schlag <jonatan.schlag(a)ipfire.org>
---
 src/functions/functions.util | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/functions/functions.util b/src/functions/functions.util
index 37feb73..0a9b3d6 100644
--- a/src/functions/functions.util
+++ b/src/functions/functions.util
@@ -310,7 +310,7 @@ isoneof() {
 isbool() {
 	local var=${1}
 
-	isoneof ${var} 0 1 no yes on off
+	isoneof ${var} 0 1 no yes on off true false
 }
 
 isinteger() {
-- 
2.6.3