diff --git a/ngx_queue.h b/ngx-queue.h
similarity index 100%
rename from ngx_queue.h
rename to ngx-queue.h
diff --git a/ol_unix.c b/ol-unix.c
similarity index 100%
rename from ol_unix.c
rename to ol-unix.c
diff --git a/ol_unix.h b/ol-unix.h
similarity index 100%
rename from ol_unix.h
rename to ol-unix.h
diff --git a/ol_win.c b/ol-win.c
similarity index 100%
rename from ol_win.c
rename to ol-win.c
diff --git a/ol_win.h b/ol-win.h
similarity index 100%
rename from ol_win.h
rename to ol-win.h
diff --git a/ol.h b/ol.h
index 3170890a..907a7ea5 100644
--- a/ol.h
+++ b/ol.h
@@ -3,9 +3,9 @@
  */
 
 #ifdef __POSIX__
-# include "ol_unix.h"
+# include "ol-unix.h"
 #else
-# include "ol_win.h"
+# include "ol-win.h"
 #endif
 
 /**