diff --git a/kvm.h b/kvm.h
index 4caa6ec..59b2c29 100644
--- a/kvm.h
+++ b/kvm.h
@@ -85,6 +85,7 @@
 
 struct KVMState;
 typedef struct KVMState KVMState;
+extern KVMState *kvm_state;
 
 int kvm_ioctl(KVMState *s, int type, ...);