diff --git a/app/src/main/java/io/legado/app/help/ReadBookConfig.kt b/app/src/main/java/io/legado/app/help/ReadBookConfig.kt
index 252d635a5..45097ff16 100644
--- a/app/src/main/java/io/legado/app/help/ReadBookConfig.kt
+++ b/app/src/main/java/io/legado/app/help/ReadBookConfig.kt
@@ -46,7 +46,15 @@ object ReadBookConfig {
             when (bgType) {
                 0 -> bg = ColorDrawable(Color.parseColor(bgStr))
                 1 -> bg = Drawable.createFromStream(App.INSTANCE.assets.open("bg" + File.separator + bgStr), "bg")
-                2 -> bg = Drawable.createFromPath(bgStr)
+                else -> {
+                    try {
+                        bg = Drawable.createFromPath(bgStr)
+                    } finally {
+                        bg ?: let {
+                            bg = ColorDrawable(Color.parseColor("#015A86"))
+                        }
+                    }
+                }
             }
         }
     }