diff --git a/zsnes/src/win/winlink.cpp b/zsnes/src/win/winlink.cpp
index 62d7c98d..44cff039 100644
--- a/zsnes/src/win/winlink.cpp
+++ b/zsnes/src/win/winlink.cpp
@@ -731,7 +731,8 @@ int RegisterWinClass(void)
 
 BYTE PrevStereoSound;
 DWORD PrevSoundQuality;
-extern unsigned char PrimaryBuffer;
+
+extern "C" { extern unsigned char PrimaryBuffer; }
 
 BOOL InitSound()
 {