diff --git a/shell/platform/darwin/ios/ios_surface_software.mm b/shell/platform/darwin/ios/ios_surface_software.mm
index 126759b28777ebcf5bd259551d6f1da63a07f86f..9a4e90e45dfbac37df30ed13ff146700265f5fa9 100644
--- a/shell/platform/darwin/ios/ios_surface_software.mm
+++ b/shell/platform/darwin/ios/ios_surface_software.mm
@@ -63,7 +63,7 @@ sk_sp<SkSurface> IOSSurfaceSoftware::AcquireBackingStore(const SkISize& size) {
     return sk_surface_;
   }
 
-  SkImageInfo info = SkImageInfo::MakeS32(size.fWidth, size.fHeight, kPremul_SkAlphaType);
+  SkImageInfo info = SkImageInfo::MakeN32(size.fWidth, size.fHeight, kPremul_SkAlphaType);
   sk_surface_ = SkSurface::MakeRaster(info, nullptr);
   return sk_surface_;
 }