diff --git a/yara/gen_fireeye_redteam_tools.yar b/yara/gen_fireeye_redteam_tools.yar
index 3ebe2c1..a8b2d60 100644
--- a/yara/gen_fireeye_redteam_tools.yar
+++ b/yara/gen_fireeye_redteam_tools.yar
@@ -1301,11 +1301,11 @@ rule APT_Builder_PY_REDFLARE_2
         rev = 1
         author = "FireEye"
     strings:
-        $1 = "<510sxxII"
-        $2 = "0x43,0x00,0x3a,0x00,0x5c,0x00,0x57,0x00,0x69,0x00,0x6e,0x00,0x64,0x00,0x6f,0x00,"
-        $3 = "parsePluginOutput"
+        $s1 = "<510sxxII"
+        $s2 = "0x43,0x00,0x3a,0x00,0x5c,0x00,0x57,0x00,0x69,0x00,0x6e,0x00,0x64,0x00,0x6f,0x00,"
+        $s3 = "parsePluginOutput"
     condition:
-        all of them and #2 == 2
+        all of them and #s2 == 2
 }
 rule APT_Loader_Win32_DShell_3
 {