diff --git a/ISLE/isleapp.cpp b/ISLE/isleapp.cpp
index baf689ce..ab0d2290 100644
--- a/ISLE/isleapp.cpp
+++ b/ISLE/isleapp.cpp
@@ -787,7 +787,7 @@ inline void IsleApp::Tick(BOOL sleepIfNotNextFrame)
 		MxStreamController* stream = Streamer()->Open("\\lego\\scripts\\isle\\isle", MxStreamer::e_DiskStream);
 		MxDSAction ds;
 
-		if (1) {
+		if (!stream) {
 			stream = Streamer()->Open("\\lego\\scripts\\nocd", MxStreamer::e_DiskStream);
 			if (!stream) {
 				return;
diff --git a/LEGO1/mxdsbuffer.cpp b/LEGO1/mxdsbuffer.cpp
index a1209557..afe87a87 100644
--- a/LEGO1/mxdsbuffer.cpp
+++ b/LEGO1/mxdsbuffer.cpp
@@ -136,7 +136,7 @@ MxResult MxDSBuffer::FUN_100c67b0(
 
 	do {
 		while (TRUE) {
-			data = (MxU8*) SwapBuffers();
+			data = (MxU8*) SkipToData();
 			if (data == NULL) {
 				return SUCCESS;
 			}
@@ -292,7 +292,7 @@ MxCore* MxDSBuffer::ReadChunk(MxDSBuffer* p_buffer, MxU32* p_chunkData, MxU16 p_
 }
 
 // FUNCTION: LEGO1 0x100c6df0
-MxU8* MxDSBuffer::SwapBuffers()
+MxU8* MxDSBuffer::SkipToData()
 {
 	MxU8* result = NULL;
 
diff --git a/LEGO1/mxdsbuffer.h b/LEGO1/mxdsbuffer.h
index f3141b21..e9fe2675 100644
--- a/LEGO1/mxdsbuffer.h
+++ b/LEGO1/mxdsbuffer.h
@@ -53,7 +53,7 @@ class MxDSBuffer : public MxCore {
 		MxStreamChunk* p_header
 	);
 	static MxCore* ReadChunk(MxDSBuffer* p_buffer, MxU32* p_chunkData, MxU16 p_flags);
-	MxU8* SwapBuffers();
+	MxU8* SkipToData();
 	MxU8 ReleaseRef(MxDSChunk*);
 	void AddRef(MxDSChunk* p_chunk);
 	MxResult CalcBytesRemaining(MxU8* p_data);