diff --git a/java/dexpreopt.go b/java/dexpreopt.go
index 0020a2d..3113eb3 100644
--- a/java/dexpreopt.go
+++ b/java/dexpreopt.go
@@ -150,7 +150,7 @@
 
 	global := dexpreopt.GetGlobalConfig(ctx)
 
-	isSystemServerJar := inList(ctx.ModuleName(), global.SystemServerJars)
+	isSystemServerJar := global.SystemServerJars.ContainsJar(ctx.ModuleName())
 
 	bootImage := defaultBootImageConfig(ctx)
 	if global.UseArtImage {