diff --git a/src/openrct2/util/sawyercoding.c b/src/openrct2/util/sawyercoding.c
index eb8481525f..dac796bd48 100644
--- a/src/openrct2/util/sawyercoding.c
+++ b/src/openrct2/util/sawyercoding.c
@@ -40,111 +40,6 @@ uint32 sawyercoding_calculate_checksum(const uint8* buffer, size_t length)
 	return checksum;
 }
 
-/**
- *
- *  rct2: 0x00676FD2
- */
-sint32 sawyercoding_validate_checksum(SDL_RWops* rw)
-{
-	size_t i, dataSize;
-	uint32 checksum, fileChecksum;
-	uint8 buffer[1024];
-
-	// Get data size
-	SDL_RWseek(rw, 0, RW_SEEK_END);
-	// for whatever the reason, SDL_RWtell return Sint64 instead of size_t.
-	dataSize = (size_t)SDL_RWtell(rw);
-	if (dataSize < 8)
-		return 0;
-	dataSize -= 4;
-
-	// Calculate checksum
-	SDL_RWseek(rw, 0, RW_SEEK_SET);
-	checksum = 0;
-	do {
-		size_t bufferSize = min(dataSize, 1024);
-		if (SDL_RWread(rw, buffer, bufferSize, 1) != 1)
-			return 0;
-
-		for (i = 0; i < bufferSize; i++)
-			checksum += buffer[i];
-		dataSize -= bufferSize;
-	} while (dataSize != 0);
-
-	// Read file checksum
-	if (SDL_RWread(rw, &fileChecksum, sizeof(fileChecksum), 1) != 1)
-		return 0;
-
-	// Reset file position
-	SDL_RWseek(rw, 0, RW_SEEK_SET);
-
-	// Validate
-	return checksum == fileChecksum;
-}
-
-bool sawyercoding_read_chunk_safe(SDL_RWops *rw, void *dst, size_t dstLength)
-{
-	// Allocate 16 MB to store uncompressed data
-	uint8 *tempBuffer = malloc(16 * 1024 * 1024);
-	size_t uncompressedLength = sawyercoding_read_chunk_with_size(rw, tempBuffer, 16 * 1024 * 1024);
-	if (uncompressedLength == SIZE_MAX) {
-		free(tempBuffer);
-		return false;
-	} else {
-		memcpy(dst, tempBuffer, min(dstLength, uncompressedLength));
-		free(tempBuffer);
-		return true;
-	}
-}
-
-bool sawyercoding_skip_chunk(SDL_RWops *rw)
-{
-	// Read chunk header
-	sawyercoding_chunk_header chunkHeader;
-	if (SDL_RWread(rw, &chunkHeader, sizeof(sawyercoding_chunk_header), 1) != 1) {
-		log_error("Unable to read chunk header!");
-		return false;
-	}
-
-	// Skip chunk data
-	SDL_RWseek(rw, chunkHeader.length, RW_SEEK_CUR);
-	return true;
-}
-
-/**
- *
- *  rct2: 0x0067685F
- * buffer (esi)
- */
-size_t sawyercoding_read_chunk_with_size(SDL_RWops* rw, uint8 *buffer, const size_t buffer_size)
-{
-	sawyercoding_chunk_header chunkHeader;
-
-	// Read chunk header
-	if (SDL_RWread(rw, &chunkHeader, sizeof(sawyercoding_chunk_header), 1) != 1) {
-		log_error("Unable to read chunk header!");
-		return -1;
-	}
-
-	uint8* src_buffer = malloc(chunkHeader.length);
-	if (src_buffer == NULL) {
-		log_error("Unable to read chunk data!");
-		return -1;
-	}
-
-	// Read chunk data
-	if (SDL_RWread(rw, src_buffer, chunkHeader.length, 1) != 1) {
-		free(src_buffer);
-		log_error("Unable to read chunk data!");
-		return -1;
-	}
-
-	// Decode chunk data
-	size_t data_size = sawyercoding_read_chunk_buffer(buffer, src_buffer, chunkHeader, buffer_size);
-	free(src_buffer);
-	return data_size;
-}
-
 size_t sawyercoding_read_chunk_buffer(uint8 *dst_buffer, const uint8 *src_buffer, sawyercoding_chunk_header chunkHeader, size_t dst_buffer_size) {
 	switch (chunkHeader.encoding) {
 	case CHUNK_ENCODING_NONE:
diff --git a/src/openrct2/util/sawyercoding.h b/src/openrct2/util/sawyercoding.h
index f4acdf1479..73571111fc 100644
--- a/src/openrct2/util/sawyercoding.h
+++ b/src/openrct2/util/sawyercoding.h
@@ -49,11 +49,7 @@ enum {
 	FILE_TYPE_SC4 = (2 << 2)
 };
 
-sint32 sawyercoding_validate_checksum(SDL_RWops* rw);
 uint32 sawyercoding_calculate_checksum(const uint8* buffer, size_t length);
-bool sawyercoding_read_chunk_safe(SDL_RWops *rw, void *dst, size_t dstLength);
-bool sawyercoding_skip_chunk(SDL_RWops *rw);
-size_t sawyercoding_read_chunk_with_size(SDL_RWops* rw, uint8 *buffer, const size_t buffer_size);
 size_t sawyercoding_read_chunk_buffer(uint8 *dst_buffer, const uint8 *src_buffer, sawyercoding_chunk_header chunkHeader, size_t dst_buffer_size);
 size_t sawyercoding_write_chunk_buffer(uint8 *dst_file, const uint8 *src_buffer, sawyercoding_chunk_header chunkHeader);
 size_t sawyercoding_decode_sv4(const uint8 *src, uint8 *dst, size_t length, size_t bufferLength);