diff --git a/Source/Core/Core/HW/GCMemcard/GCMemcard.cpp b/Source/Core/Core/HW/GCMemcard/GCMemcard.cpp
index e2187c72b9..77f73a1224 100644
--- a/Source/Core/Core/HW/GCMemcard/GCMemcard.cpp
+++ b/Source/Core/Core/HW/GCMemcard/GCMemcard.cpp
@@ -1420,6 +1420,16 @@ s32 GCMemcard::PSO_MakeSaveGameValid(const Header& cardheader, const DEntry& dir
   return 1;
 }
 
+GCMBlock::GCMBlock()
+{
+  Erase();
+}
+
+void GCMBlock::Erase()
+{
+  memset(m_block.data(), 0xFF, m_block.size());
+}
+
 Header::Header(int slot, u16 size_mbits, bool shift_jis)
 {
   // Nintendo format algorithm.
diff --git a/Source/Core/Core/HW/GCMemcard/GCMemcard.h b/Source/Core/Core/HW/GCMemcard/GCMemcard.h
index 30ef094ddf..bc32974e3e 100644
--- a/Source/Core/Core/HW/GCMemcard/GCMemcard.h
+++ b/Source/Core/Core/HW/GCMemcard/GCMemcard.h
@@ -92,8 +92,8 @@ protected:
 
 struct GCMBlock
 {
-  GCMBlock() { Erase(); }
-  void Erase() { memset(m_block.data(), 0xFF, m_block.size()); }
+  GCMBlock();
+  void Erase();
   std::array<u8, BLOCK_SIZE> m_block;
 };