diff --git a/vpnor/test/write_rw.cpp b/vpnor/test/write_rw.cpp
index c40af6a..c9d2b60 100644
--- a/vpnor/test/write_rw.cpp
+++ b/vpnor/test/write_rw.cpp
@@ -29,7 +29,7 @@
 
     struct mbox_context _ctx, *ctx = &_ctx;
     uint8_t src[8] = {0};
-    void *map;
+    void* map;
     int rc;
     int fd;