diff --git a/minecraft-server/start-utils b/minecraft-server/start-utils
index 151cf05a..13a29971 100644
--- a/minecraft-server/start-utils
+++ b/minecraft-server/start-utils
@@ -28,7 +28,7 @@ function isTrue {
 }
 
 function isDebugging {
-  if [ ${DEBUG^^} = TRUE ]; then
+  if [[ ${DEBUG^^} = TRUE ]]; then
     return 0
   else
     return 1