diff --git a/run/install.sh b/run/install.sh
index 0b427c2..3ddf6ce 100644
--- a/run/install.sh
+++ b/run/install.sh
@@ -69,7 +69,7 @@ if [ ! -f "${RDC}" ]; then
 fi
 
 { xz -dc <"$RDC" >"$TMP/rd" 2>/dev/null; rc=$?; } || :
-(( rc > 1 )) && error "Failed to unxz $RDC, reason $rc" && exit 91
+(( rc != 1 )) && error "Failed to unxz $RDC, reason $rc" && exit 91
 
 { (cd "$TMP" && cpio -idm <"$TMP/rd" 2>/dev/null); rc=$?; } || :
 (( rc != 0 )) && error "Failed to cpio $RDC, reason $rc" && exit 92