diff --git a/tools/perf/util/color.c b/tools/perf/util/color.c
index 1210ba555d07bbc923cf38bcf78673ebdbd0b7ca..47a34b561f5da64addc08a8945c73a0ed752c2ad 100644
--- a/tools/perf/util/color.c
+++ b/tools/perf/util/color.c
@@ -3,6 +3,7 @@
 #include "config.h"
 #include "color.h"
 #include <math.h>
+#include <unistd.h>
 
 int perf_use_color_default = -1;