diff --git a/test/phpunit/testvirus.txt b/test/phpunit/testvirus.txt
index 4a130462173..cef4658b70f 100644
--- a/test/phpunit/testvirus.txt
+++ b/test/phpunit/testvirus.txt
@@ -1,2 +1,2 @@
-# Remove this line and replace the ABC with X50 to get a file that is detected by antiviruses.
-ABC!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*
\ No newline at end of file
+# Remove this line and replace the ABC with X5 to get a file that is detected by antiviruses.
+ABO!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*
\ No newline at end of file