diff --git a/Makefile b/Makefile
index f181687250d..f83b7968319 100644
--- a/Makefile
+++ b/Makefile
@@ -936,7 +936,7 @@ LIB_OBJS += walker.o
 LIB_OBJS += wildmatch.o
 LIB_OBJS += worktree.o
 LIB_OBJS += wrapper.o
-LIB_OBJS += write_or_die.o
+LIB_OBJS += write-or-die.o
 LIB_OBJS += ws.o
 LIB_OBJS += wt-status.o
 LIB_OBJS += xdiff-interface.o
diff --git a/write_or_die.c b/write-or-die.c
similarity index 100%
rename from write_or_die.c
rename to write-or-die.c