diff --git a/src/commands/challenge.rs b/src/commands/challenge.rs
index 940035d..3eddc39 100644
--- a/src/commands/challenge.rs
+++ b/src/commands/challenge.rs
@@ -111,7 +111,7 @@ pub async fn submit(ctx: Context<'_>, submission: serenity::Attachment) -> Resul
                 .map(|value| value.as_str().unwrap().to_owned())
                 .collect();
             for (i, attachment) in attachments.iter().enumerate() {
-                if attachment.filename.starts_with("_test_submission.") {
+                if attachment.filename.starts_with("test_submission_.") {
                     is_test = true;
                 }
                 let extension;
@@ -160,7 +160,7 @@ pub async fn submit(ctx: Context<'_>, submission: serenity::Attachment) -> Resul
         submitter_data.insert(String::from("username"), username.clone().into());
         let mut images: Vec<String> = Vec::new();
         for (i, attachment) in attachments.iter().enumerate() {
-            if attachment.filename.starts_with("_test_submission.") {
+            if attachment.filename.starts_with("test_submission_.") {
                 is_test = true;
             }
             let extension;