--- a/Makefile
+++ b/Makefile
@@ -1024,7 +1024,7 @@ endif
 docs/source/cmd/abc.rst: $(TARGETS) $(EXTRA_TARGETS)
 	$(Q) mkdir -p docs/source/cmd
 	$(Q) mkdir -p temp/docs/source/cmd
-	$(Q) cd temp && ./../$(PROGRAM_PREFIX)yosys -p 'help -write-rst-command-reference-manual'
+	$(Q) cd temp && ./../$(PROGRAM_PREFIX)yosys -p 'help -write-rst-command-reference-manual' >/dev/null
 	$(Q) $(RSYNC_CP) temp/docs/source/cmd docs/source
 	$(Q) rm -rf temp
 docs/source/cell/word_add.rst: $(TARGETS) $(EXTRA_TARGETS)