diff --git a/src/ibm.h b/src/ibm.h
index a4a0daf..a86c48a 100644
--- a/src/ibm.h
+++ b/src/ibm.h
@@ -539,6 +539,7 @@ extern int cdrom_enabled;
 extern uint32_t atapi_get_cd_volume(int channel);
 
 void pclog(const char *format, ...);
+void fatal(const char *format, ...);
 extern int nmi;
 
 extern int times;