diff --git a/entrypoint.sh b/entrypoint.sh
index 2784ae2..8ffffc0 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -4,7 +4,7 @@ set -eu
 
 export GITHUB="true"
 
-[ -n "$INPUT_TIMEOUT" ] && export INPUT_TIMEOUT="30s"
-[ -n "$INPUT_COMMAND_TIMEOUT" ] && export INPUT_COMMAND_TIMEOUT="1m"
+[ -z "$INPUT_TIMEOUT" ] && export INPUT_TIMEOUT="30s"
+[ -z "$INPUT_COMMAND_TIMEOUT" ] && export INPUT_COMMAND_TIMEOUT="1m"
 
 sh -c "/bin/drone-scp $*"