diff --git a/src/backend/core/Mem.hpp b/src/backend/core/Mem.hpp
index c255fc4d..6da90bf6 100644
--- a/src/backend/core/Mem.hpp
+++ b/src/backend/core/Mem.hpp
@@ -10,12 +10,6 @@
 #include <GameDB.hpp>
 
 namespace n64 {
-struct CartInfo {
-  bool isPAL;
-  u32 cicType;
-  u32 crc;
-};
-
 struct ROMHeader {
   u8 initialValues[4];
   u32 clockRate;
diff --git a/src/backend/core/mmio/PIF.hpp b/src/backend/core/mmio/PIF.hpp
index af8ad6fc..a260f0c9 100644
--- a/src/backend/core/mmio/PIF.hpp
+++ b/src/backend/core/mmio/PIF.hpp
@@ -88,8 +88,6 @@ enum CICType {
   CIC_NUS_6106_7106
 };
 
-struct CartInfo;
-
 struct PIF {
   PIF();
   ~PIF();