diff --git a/tools/perf/Documentation/Makefile b/tools/perf/Documentation/Makefile
index f75175757892272847e97c22ef6493052450fb70..5a37a7c84e69891fc753f205c50b81d22238499f 100644
--- a/tools/perf/Documentation/Makefile
+++ b/tools/perf/Documentation/Makefile
@@ -1,12 +1,6 @@
+include ../../scripts/Makefile.include
 include ../config/utilities.mak
 
-OUTPUT := ./
-ifeq ("$(origin O)", "command line")
-  ifneq ($(O),)
-	OUTPUT := $(O)/
-  endif
-endif
-
 MAN1_TXT= \
 	$(filter-out $(addsuffix .txt, $(ARTICLES) $(SP_ARTICLES)), \
 		$(wildcard perf-*.txt)) \
@@ -277,7 +271,7 @@ $(MAN_HTML): $(OUTPUT)%.html : %.txt
 
 $(OUTPUT)%.1 $(OUTPUT)%.5 $(OUTPUT)%.7 : $(OUTPUT)%.xml
 	$(QUIET_XMLTO)$(RM) $@ && \
-	$(XMLTO) -o $(OUTPUT) -m $(MANPAGE_XSL) $(XMLTO_EXTRA) man $<
+	$(XMLTO) -o $(OUTPUT). -m $(MANPAGE_XSL) $(XMLTO_EXTRA) man $<
 
 $(OUTPUT)%.xml : %.txt
 	$(QUIET_ASCIIDOC)$(RM) $@+ $@ && \