diff --git a/include/dmusici.h b/include/dmusici.h
index 09e9497..f9d737f 100644
--- a/include/dmusici.h
+++ b/include/dmusici.h
@@ -67,7 +67,7 @@
 DEFINE_GUID(CLSID_DirectMusicScriptAutoImpSegment,         0x4062c116,0x0270,0x11d3,0x8b,0xcb,0x00,0x60,0x08,0x93,0xb1,0xb6);
 DEFINE_GUID(CLSID_AudioVBScript,                           0x4ee17959,0x931e,0x49e4,0xa2,0xc6,0x97,0x7e,0xcf,0x36,0x28,0xf3);
 DEFINE_GUID(CLSID_DirectMusicScriptAutoImpPerformance,     0xa861c6e2,0xfcfc,0x11d2,0x8b,0xc9,0x00,0x60,0x08,0x93,0xb1,0xb6);
-DEFINE_GUID(CLSID_DirectMusicScripSourceCodeLoader,        0xc70eb77f,0xefd4,0x4678,0xa2,0x7b,0xbf,0x16,0x48,0xf3,0x0d,0x04);
+DEFINE_GUID(CLSID_DirectMusicScriptSourceCodeLoader,       0xc70eb77f,0xefd4,0x4678,0xa2,0x7b,0xbf,0x16,0x48,0xf3,0x0d,0x04);
 DEFINE_GUID(CLSID_DirectMusicScriptAutoImpSegmentState,    0xebf2320a,0x2502,0x11d3,0x8b,0xd1,0x00,0x60,0x08,0x93,0xb1,0xb6);
 DEFINE_GUID(CLSID_DirectMusicScriptAutoImpAudioPathConfig, 0x1cebde3e,0x6b91,0x484a,0xaf,0x48,0x5e,0x4f,0x4e,0xd6,0xb1,0xe1);
 DEFINE_GUID(CLSID_DirectMusicScriptAutoImpAudioPath,       0x2c5f9b72,0x7148,0x4d97,0xbf,0xc9,0x68,0xa0,0xe0,0x76,0xbe,0xbd);