2 files changed, 2 insertions, 2 deletions
diff --git a/lib/win32/emu.cpp b/lib/win32/emu.cpp
index 658bfbbc..65c12b09 100644
--- a/lib/win32/emu.cpp
+++ b/lib/win32/emu.cpp
@@ -613,7 +613,7 @@ HANDLE openfile(const char *pFileName, int flags, int mode)
 		createDisposition = CREATE_NEW;
 	}
 
-	if (flags & O_LOCK)
+	if (flags & BOX_OPEN_LOCK)
 	{
 		shareMode = 0;
 	}
diff --git a/lib/win32/emu.h b/lib/win32/emu.h
index 8014316a..80c1d5d8 100644
--- a/lib/win32/emu.h
+++ b/lib/win32/emu.h
@@ -224,7 +224,7 @@ struct dirent *readdir(DIR *dp);
 int closedir(DIR *dp);
 
 // local constant to open file exclusively without shared access
-#define O_LOCK 0x10000
+#define BOX_OPEN_LOCK 0x10000
 
 extern DWORD winerrno; /* used to report errors from openfile() */
 HANDLE openfile(const char *filename, int flags, int mode);