diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 2dff0b8..1f7ec48 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -61,9 +61,6 @@
 # Define NO_LIBDW_DWARF_UNWIND if you do not want libdw support
 # for dwarf backtrace post unwind.
 
-# temporarily disabled
-NO_LIBDW_DWARF_UNWIND := 1
-
 ifeq ($(srctree),)
 srctree := $(patsubst %/,%,$(dir $(shell pwd)))
 srctree := $(patsubst %/,%,$(dir $(srctree)))
@@ -412,7 +409,7 @@
 LIB_OBJS += $(OUTPUT)tests/code-reading.o
 LIB_OBJS += $(OUTPUT)tests/sample-parsing.o
 LIB_OBJS += $(OUTPUT)tests/parse-no-sample-id-all.o
-ifndef NO_LIBUNWIND
+ifndef NO_DWARF_UNWIND
 ifeq ($(ARCH),x86)
 LIB_OBJS += $(OUTPUT)tests/dwarf-unwind.o
 endif