diff --git a/Userland/Libraries/LibGfx/PNGLoader.cpp b/Userland/Libraries/LibGfx/PNGLoader.cpp
index 4496c668056..8d723d4768b 100644
--- a/Userland/Libraries/LibGfx/PNGLoader.cpp
+++ b/Userland/Libraries/LibGfx/PNGLoader.cpp
@@ -834,6 +834,8 @@ static bool process_PLTE(ReadonlyBytes data, PNGLoadingContext& context)
 static bool process_tRNS(ReadonlyBytes data, PNGLoadingContext& context)
 {
     switch (context.color_type) {
+    case 0:
+    case 2:
     case 3:
         context.palette_transparency_data.append(data.data(), data.size());
         break;