diff --git a/rehlds/engine/common.cpp b/rehlds/engine/common.cpp
index ce8ccc2..aa88359 100644
--- a/rehlds/engine/common.cpp
+++ b/rehlds/engine/common.cpp
@@ -2167,8 +2167,8 @@ void COM_CopyFileChunk(FileHandle_t dst, FileHandle_t src, int nSize)
 
 	while (copysize > COM_COPY_CHUNK_SIZE)
 	{
-		FS_Read(copybuf, 1, COM_COPY_CHUNK_SIZE, src);
-		FS_Write(copybuf, 1, COM_COPY_CHUNK_SIZE, dst);
+		FS_Read(copybuf, COM_COPY_CHUNK_SIZE, 1, src);
+		FS_Write(copybuf, COM_COPY_CHUNK_SIZE, 1, dst);
 		copysize -= COM_COPY_CHUNK_SIZE;
 	}
 
diff --git a/rehlds/engine/filesystem_internal.cpp b/rehlds/engine/filesystem_internal.cpp
index b6cf490..3edc358 100644
--- a/rehlds/engine/filesystem_internal.cpp
+++ b/rehlds/engine/filesystem_internal.cpp
@@ -156,13 +156,21 @@ int FS_EndOfFile(FileHandle_t file)
 /* <25fa9> ../engine/filesystem_internal.cpp:131 */
 int FS_Read(void *pOutput, int size, int count, FileHandle_t file)
 {
+#ifdef REHLDS_FIXES
+	return g_pFileSystem->Read(pOutput, size * count, file);
+#else // REHLDS_FIXES
 	return g_pFileSystem->Read(pOutput, size, file);
+#endif // REHLDS_FIXES
 }
 
 /* <2641e> ../engine/filesystem_internal.cpp:138 */
 int FS_Write(const void *pInput, int size, int count, FileHandle_t file)
 {
+#ifdef REHLDS_FIXES
+	return g_pFileSystem->Write(pInput, size * count, file);
+#else // REHLDS_FIXES
 	return g_pFileSystem->Write(pInput, size, file);
+#endif // REHLDS_FIXES
 }
 
 /* <26479> ../engine/filesystem_internal.cpp:145 */
diff --git a/rehlds/engine/hashpak.cpp b/rehlds/engine/hashpak.cpp
index edcd30c..9d75636 100644
--- a/rehlds/engine/hashpak.cpp
+++ b/rehlds/engine/hashpak.cpp
@@ -850,7 +850,7 @@ void HPAK_CreatePak(char *pakname, struct resource_s *pResource, void *pData, Fi
 
 	curpos = FS_Tell(fp);
 	FS_Write(&hash_pack_dir.nEntries, 4, 1, fp);
-	FS_Write(&hash_pack_dir.p_rgEntries, sizeof(hash_pack_entry_t), 1, fp);
+	FS_Write(hash_pack_dir.p_rgEntries, sizeof(hash_pack_entry_t), 1, fp);
 
 	if (hash_pack_dir.p_rgEntries)
 	{
diff --git a/rehlds/engine/sys_dll2.cpp b/rehlds/engine/sys_dll2.cpp
index c9baeeb..7d75405 100644
--- a/rehlds/engine/sys_dll2.cpp
+++ b/rehlds/engine/sys_dll2.cpp
@@ -651,7 +651,7 @@ NOXREF int BuildMapCycleListHints(char **hints)
 	if (length)
 	{
 		pFileList = (char *)malloc(length);
-		if (pFileList && FS_Read(pFileList, length, 0, pFile) != 1)
+		if (pFileList && FS_Read(pFileList, length, 1, pFile) != 1)
 		{
 			while (1)
 			{