diff --git a/build.gradle b/build.gradle
index 0e73c810f1..f01aec26f6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -22,7 +22,7 @@ plugins {
 	id 'maven-publish'
 }
 
-def minecraft_version = "1.15-pre5"
+def minecraft_version = "1.15-pre6"
 
 def ENV = System.getenv()
 // Fetch build number from Jenkins
diff --git a/mappings/net/minecraft/client/options/GameOptions.mapping b/mappings/net/minecraft/client/options/GameOptions.mapping
index 6bb32b7765..36589109ed 100644
--- a/mappings/net/minecraft/client/options/GameOptions.mapping
+++ b/mappings/net/minecraft/client/options/GameOptions.mapping
@@ -131,7 +131,3 @@ CLASS net/minecraft/class_315 net/minecraft/client/options/GameOptions
 		ARG 1 fallbackColor
 	METHOD method_19345 getTextBackgroundColor (F)I
 		ARG 1 fallbackOpacity
-	CLASS class_4741 ParseError
-		METHOD <init> (Ljava/lang/String;Ljava/lang/Throwable;)V
-			ARG 1 message
-			ARG 2 cause