diff --git a/rpcs3/Emu/Cell/Modules/cellGcmSys.cpp b/rpcs3/Emu/Cell/Modules/cellGcmSys.cpp
index f4c0c8108b..398b246431 100644
--- a/rpcs3/Emu/Cell/Modules/cellGcmSys.cpp
+++ b/rpcs3/Emu/Cell/Modules/cellGcmSys.cpp
@@ -93,13 +93,12 @@ void InitOffsetTable()
 {
 	const auto cfg = g_fxo->get<gcm_config>();
 
-	cfg->offsetTable.ioAddress.set(vm::alloc(3072 * sizeof(u16), vm::main));
-	cfg->offsetTable.eaAddress.set(vm::alloc(512 * sizeof(u16), vm::main));
+	const u32 addr = vm::alloc((3072 + 512) * sizeof(u16), vm::main);
 
-	std::memset(cfg->offsetTable.ioAddress.get_ptr(), 0xFF, 3072 * sizeof(u16));
-	std::memset(cfg->offsetTable.eaAddress.get_ptr(), 0xFF, 512 * sizeof(u16));
+	cfg->offsetTable.ioAddress.set(addr);
+	cfg->offsetTable.eaAddress.set(addr + (3072 * sizeof(u16)));
 
-	cfg->reserved_size = 0;
+	std::memset(vm::base(addr), 0xFF, (3072 + 512) * sizeof(u16));
 }
 
 //----------------------------------------------------------------------------
diff --git a/rpcs3/Emu/Cell/Modules/cellGcmSys.h b/rpcs3/Emu/Cell/Modules/cellGcmSys.h
index 3786c4003c..9a46b0d985 100644
--- a/rpcs3/Emu/Cell/Modules/cellGcmSys.h
+++ b/rpcs3/Emu/Cell/Modules/cellGcmSys.h
@@ -30,7 +30,7 @@ struct gcm_config
 	CellGcmContextData current_context;
 	gcmInfo gcm_info;
 
-	CellGcmOffsetTable offsetTable;
+	CellGcmOffsetTable offsetTable{};
 	u16 IoMapTable[0xC00]{};
 	shared_mutex gcmio_mutex;