diff --git a/include/cstrike/Structures/PlayerInfo.h b/include/cstrike/Structures/PlayerInfo.h
index 8508f15..7f4ffa8 100644
--- a/include/cstrike/Structures/PlayerInfo.h
+++ b/include/cstrike/Structures/PlayerInfo.h
@@ -1,7 +1,5 @@
 #pragma once
 
-typedef unsigned long CRC32_t;
-
 typedef struct player_info_s {
 	char name[MAX_PLAYER_NAME_LENGTH];
 	int userID;
diff --git a/include/cstrike/Utilities/CRC32.h b/include/cstrike/Utilities/CRC32.h
new file mode 100644
index 0000000..7865b68
--- /dev/null
+++ b/include/cstrike/Utilities/CRC32.h
@@ -0,0 +1,18 @@
+#pragma once
+
+#define CRC32_INIT_VALUE 0xFFFFFFFFUL
+#define CRC32_XOR_VALUE 0xFFFFFFFFUL
+
+typedef unsigned int CRC32_t;
+
+typedef void (*CRC32_ProcessBufferFn) (CRC32_t*, const void*, int);
+
+extern CRC32_ProcessBufferFn CRC32_ProcessBuffer;
+
+static void CRC32_Init(CRC32_t* crc) {
+	*crc = CRC32_INIT_VALUE;
+}
+
+static void CRC32_Final(CRC32_t* crc) {
+	*crc ^= CRC32_XOR_VALUE;
+}
\ No newline at end of file
diff --git a/include/cstrike/cstrike.h b/include/cstrike/cstrike.h
index 1e15d6a..9221d88 100644
--- a/include/cstrike/cstrike.h
+++ b/include/cstrike/cstrike.h
@@ -5,16 +5,16 @@
 #include "Definitions/Buttons.h"
 #include "Definitions/Const.h"
 
+#include "Utilities/Virtuals.h"
+#include "Utilities/CRC32.h"
+
 #include "Structures/Color.h"
 #include "Structures/Matrix.h"
 #include "Structures/Vector.h"
 #include "Structures/PlayerInfo.h"
 
-#include "Utilities/Virtuals.h"
-
-#include "Classes/Interface.h"
-#include "Classes/CInput.h"
 #include "Classes/CUserCmd.h"
+#include "Classes/CInput.h"
 #include "Classes/CBaseHandle.h"
 #include "Classes/CGlobalVarsBase.h"
 #include "Classes/ClientClass.h"