diff --git a/server/include/random_jkiss.h b/server/include/random_jkiss.h
index 661294437..21d638c82 100644
--- a/server/include/random_jkiss.h
+++ b/server/include/random_jkiss.h
@@ -12,7 +12,7 @@
 extern "C" {
 #endif
 
-unsigned int random_jkiss(void);
+extern unsigned int random_jkiss(void);
     
 #ifdef	__cplusplus
 }