libs/x86emu/ops2.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libs/x86emu/ops2.c b/libs/x86emu/ops2.c
index 06b7f56..bb3c425 100644
--- a/libs/x86emu/ops2.c
+++ b/libs/x86emu/ops2.c
@@ -46,6 +46,8 @@
 		     ((x & 0x0000ff00) << 8) | \
 		     ((x & 0x000000ff) << 24))
 
+extern void cpuid (void);
+
 /*----------------------------- Implementation ----------------------------*/
 
 /****************************************************************************