diff --git a/src/detections/system.rs b/src/detections/system.rs
index 6399d3f4..fdcea53c 100644
--- a/src/detections/system.rs
+++ b/src/detections/system.rs
@@ -28,15 +28,15 @@ impl System {
 
     fn windows_event_log(&mut self, event_data: HashMap<String, String>) {
         match event_data.get("param1") {
-            Some(_data) => {
-                if _data == "Windows Event Log" {
-                    println!("Service name : {}", _data);
+            Some(_param1) => {
+                if _param1 == "Windows Event Log" {
+                    println!("Service name : {}", _param1);
                     match event_data.get("param2") {
-                        Some(_data) => {
-                            if _data == "disabled" {
+                        Some(_param2) => {
+                            if _param2 == "disabled" {
                                 println!("Message : Event Log Service Stopped");
                                 println!("Results : Selective event log manipulation may follow this event.");
-                            } else if _data == "auto start" {
+                            } else if _param2 == "auto start" {
                                 println!("Message : Event Log Service Started");
                                 println!("Results : Selective event log manipulation may precede this event.");
                             }