diff --git a/spec b/spec
index 164e1f744b..8c6f404508 100644
--- a/spec
+++ b/spec
@@ -339,7 +339,7 @@ beginseg
     include "build/src/code/z_malloc.o"
     include "build/src/code/z_map_mark.o"
     include "build/src/code/z_moji.o"
-    include "build/src/code/prenmi_buff.o"
+    include "build/src/code/z_prenmi_buff.o"
     include "build/src/code/z_msgevent.o"
     include "build/src/code/code_8007BF90.o"
     include "build/src/code/z_onepointdemo.o"
diff --git a/src/code/prenmi_buff.c b/src/code/z_prenmi_buff.c
similarity index 100%
rename from src/code/prenmi_buff.c
rename to src/code/z_prenmi_buff.c