diff --git a/testing.sh b/testing.sh
index 64b90fa..08fe8cb 100755
--- a/testing.sh
+++ b/testing.sh
@@ -75,7 +75,7 @@ function assertions() {
 }
 
 function assert_matching_file_hardlinked() {
-  if ! [ "$(get_inode "$1")" -eq "$(get_inode "$2")" ]; then
+  if [[ "$(get_inode "$1")" != "$(get_inode "$2")" ]]; then
     echo "File '$1' was not hardlinked to '$2' when it should have been!"
     exit 1
   fi