diff --git a/code/modules/client/client_procs.dm b/code/modules/client/client_procs.dm
index 77c71823f5..a38a4c5d40 100644
--- a/code/modules/client/client_procs.dm
+++ b/code/modules/client/client_procs.dm
@@ -4,8 +4,8 @@
 #define UPLOAD_LIMIT		1048576	//Restricts client uploads to the server to 1MB //Could probably do with being lower.
 
 GLOBAL_LIST_INIT(blacklisted_builds, list(
-	1407 = "bug preventing client display overrides from working leads to clients being able to see things/mobs they shouldn't be able to see",
-	1408 = "bug preventing client display overrides from working leads to clients being able to see things/mobs they shouldn't be able to see",
+	"1407" = "bug preventing client display overrides from working leads to clients being able to see things/mobs they shouldn't be able to see",
+	"1408" = "bug preventing client display overrides from working leads to clients being able to see things/mobs they shouldn't be able to see",
 	
 	))
 
@@ -235,10 +235,10 @@ GLOBAL_LIST_EMPTY(external_rsc_urls)
 
 	. = ..()	//calls mob.Login()
 	#if DM_VERSION >= 512
-	if (byond_build in GLOB.blacklisted_builds)
+	if (num2text(byond_build) in GLOB.blacklisted_builds)
 		log_access("Failed login: blacklisted byond version")
 		to_chat(src, "<span class='userdanger'>Your version of byond is blacklisted.</span>")
-		to_chat(src, "<span class='danger'>Byond build [byond_build] ([byond_version].[byond_build]) has been blacklisted for the following reason: [GLOB.blacklisted_builds[byond_build]].</span>")
+		to_chat(src, "<span class='danger'>Byond build [byond_build] ([byond_version].[byond_build]) has been blacklisted for the following reason: [GLOB.blacklisted_builds[num2text(byond_build)]].</span>")
 		to_chat(src, "<span class='danger'>Please download a new version of byond. if [byond_build] is the latest, you can go to http://www.byond.com/download/build/ to download other versions.</span>")
 		if(connecting_admin)
 			to_chat(src, "As an admin, you are being allowed to continue using this version, but please consider changing byond versions")