diff --git a/src/Makefile.bench.include b/src/Makefile.bench.include
index 840d33c..e368f18 100644
--- a/src/Makefile.bench.include
+++ b/src/Makefile.bench.include
@@ -67,7 +67,9 @@ bitcoin_bench_clean : FORCE
%.raw.h: %.raw
@$(MKDIR_P) $(@D)
- @echo "static unsigned const char $(*F)[] = {" >> $@
- @$(HEXDUMP) -v -e '8/1 "0x%02x, "' -e '"\n"' $< | $(SED) -e 's/0x ,//g' >> $@
- @echo "};" >> $@
+ @{ \
+ echo "static unsigned const char $(*F)[] = {" && \
+ $(HEXDUMP) -v -e '8/1 "0x%02x, "' -e '"\n"' $< | $(SED) -e 's/0x ,//g' && \
+ echo "};"; \
+ } > "$@" || rm "$@"
@echo "Generated $@"