diff --git a/LEGO1/lego/legoomni/src/entity/legoworldpresenter.cpp b/LEGO1/lego/legoomni/src/entity/legoworldpresenter.cpp
index cbf711ae..c4b8c52e 100644
--- a/LEGO1/lego/legoomni/src/entity/legoworldpresenter.cpp
+++ b/LEGO1/lego/legoomni/src/entity/legoworldpresenter.cpp
@@ -319,7 +319,7 @@ MxResult LegoWorldPresenter::FUN_10067360(ModelDbPart& p_part, FILE* p_wdbFile)
 	MxResult result;
 	MxU8* buff = new MxU8[p_part.m_partDataLength];
 
-	fseek(p_wdbFile, p_part.m_partDataOffset, 0);
+	fseek(p_wdbFile, p_part.m_partDataOffset, SEEK_SET);
 	if (fread(buff, p_part.m_partDataLength, 1, p_wdbFile) != 1) {
 		return FAILURE;
 	}
@@ -344,7 +344,7 @@ MxResult LegoWorldPresenter::FUN_100674b0(ModelDbModel& p_model, FILE* p_wdbFile
 {
 	MxU8* buff = new MxU8[p_model.m_unk0x04];
 
-	fseek(p_wdbFile, p_model.m_unk0x08, 0);
+	fseek(p_wdbFile, p_model.m_unk0x08, SEEK_SET);
 	if (fread(buff, p_model.m_unk0x04, 1, p_wdbFile) != 1) {
 		return FAILURE;
 	}
diff --git a/LEGO1/omni/include/mxdsfile.h b/LEGO1/omni/include/mxdsfile.h
index 09772b68..f15139f9 100644
--- a/LEGO1/omni/include/mxdsfile.h
+++ b/LEGO1/omni/include/mxdsfile.h
@@ -43,7 +43,7 @@ public:
 	MxResult Open(MxULong) override;                 // vtable+0x14
 	MxResult Close() override;                       // vtable+0x18
 	MxResult Read(unsigned char*, MxULong) override; // vtable+0x20
-	MxResult Seek(MxLong, int) override;             // vtable+0x24
+	MxResult Seek(MxLong, MxS32) override;           // vtable+0x24
 	MxULong GetBufferSize() override;                // vtable+0x28
 	MxULong GetStreamBuffersNum() override;          // vtable+0x2c
 
diff --git a/LEGO1/omni/include/mxdssource.h b/LEGO1/omni/include/mxdssource.h
index 352ee2c5..06f5e556 100644
--- a/LEGO1/omni/include/mxdssource.h
+++ b/LEGO1/omni/include/mxdssource.h
@@ -31,7 +31,7 @@ public:
 	virtual MxLong Close() = 0;                          // vtable+0x18
 	virtual MxResult ReadToBuffer(MxDSBuffer* p_buffer); // vtable+0x1c
 	virtual MxResult Read(unsigned char*, MxULong) = 0;  // vtable+0x20
-	virtual MxLong Seek(MxLong, int) = 0;                // vtable+0x24
+	virtual MxLong Seek(MxLong, MxS32) = 0;              // vtable+0x24
 	virtual MxULong GetBufferSize() = 0;                 // vtable+0x28
 	virtual MxULong GetStreamBuffersNum() = 0;           // vtable+0x2c
 	virtual MxLong GetLengthInDWords();                  // vtable+0x30
diff --git a/LEGO1/omni/src/common/mxutilities.cpp b/LEGO1/omni/src/common/mxutilities.cpp
index fe45327e..c943bde5 100644
--- a/LEGO1/omni/src/common/mxutilities.cpp
+++ b/LEGO1/omni/src/common/mxutilities.cpp
@@ -12,7 +12,7 @@
 #include <assert.h>
 
 // GLOBAL: LEGO1 0x101020e8
-void (*g_omniUserMessage)(const char*, int) = NULL;
+void (*g_omniUserMessage)(const char*, MxS32) = NULL;
 
 // FUNCTION: LEGO1 0x100b6e10
 MxBool GetRectIntersection(
@@ -166,7 +166,7 @@ MxDSObject* CreateStreamObject(MxDSFile* p_file, MxS16 p_ofs)
 	MxU8* buf;
 	_MMCKINFO tmpChunk;
 
-	if (p_file->Seek(((MxLong*) p_file->GetBuffer())[p_ofs], 0)) {
+	if (p_file->Seek(((MxLong*) p_file->GetBuffer())[p_ofs], SEEK_SET)) {
 		return NULL;
 	}
 
diff --git a/LEGO1/omni/src/stream/mxdiskstreamprovider.cpp b/LEGO1/omni/src/stream/mxdiskstreamprovider.cpp
index 0e100ef9..1c3ff1c0 100644
--- a/LEGO1/omni/src/stream/mxdiskstreamprovider.cpp
+++ b/LEGO1/omni/src/stream/mxdiskstreamprovider.cpp
@@ -245,7 +245,7 @@ void MxDiskStreamProvider::PerformWork()
 	buffer = streamingAction->GetUnknowna0();
 
 	if (m_pFile->GetPosition() == streamingAction->GetBufferOffset() ||
-		m_pFile->Seek(streamingAction->GetBufferOffset(), 0) == 0) {
+		m_pFile->Seek(streamingAction->GetBufferOffset(), SEEK_SET) == 0) {
 		buffer->SetUnknown14(m_pFile->GetPosition());
 
 		if (m_pFile->ReadToBuffer(buffer) == SUCCESS) {
diff --git a/LEGO1/omni/src/stream/mxdsfile.cpp b/LEGO1/omni/src/stream/mxdsfile.cpp
index 0f3b5227..54195f92 100644
--- a/LEGO1/omni/src/stream/mxdsfile.cpp
+++ b/LEGO1/omni/src/stream/mxdsfile.cpp
@@ -41,7 +41,7 @@ MxResult MxDSFile::Open(MxULong p_uStyle)
 		Close();
 	}
 	else {
-		Seek(0, 0);
+		Seek(0, SEEK_SET);
 	}
 
 	return result;