diff --git a/subprojects/memcard/src/block.cpp b/subprojects/memcard/src/block.cpp
index ace78a0..6fa2aa5 100644
--- a/subprojects/memcard/src/block.cpp
+++ b/subprojects/memcard/src/block.cpp
@@ -136,9 +136,8 @@ std::vector<uint8_t> BasicBlock<Const>::icon_palette() const {
 
 template <bool Const>
 bool BasicBlock<Const>::has_magic() const {
-	const constexpr uint16_t magic = ('S' << 8) | 'C'; //0x5343 "SC"
-	const data_type* const ptr = frame(0).data();
-	return magic == static_cast<uint16_t>((ptr[0] << 8) | ptr[1]);
+	ContentInfo cinfo(frame(0));
+	return cinfo.magic == cinfo.SCMagic;
 }
 
 template <bool Const>