diff --git a/tools/perf/arch/s390/util/header.c b/tools/perf/arch/s390/util/header.c
index 3db85cd2069e..a25896135abe 100644
--- a/tools/perf/arch/s390/util/header.c
+++ b/tools/perf/arch/s390/util/header.c
@@ -11,7 +11,7 @@
 #include <unistd.h>
 #include <stdio.h>
 #include <string.h>
-#include <ctype.h>
+#include <linux/ctype.h>
 
 #include "../../util/header.h"
 #include "../../util/util.h"
diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index 699e020737d9..a0cf3cd95ced 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -17,7 +17,7 @@
 #include "pmu-events/pmu-events.h"
 #include "strlist.h"
 #include <assert.h>
-#include <ctype.h>
+#include <linux/ctype.h>
 
 struct metric_event *metricgroup__lookup(struct rblist *metric_events,
 					 struct perf_evsel *evsel,
diff --git a/tools/perf/util/time-utils.c b/tools/perf/util/time-utils.c
index 2b48816a2d2e..369fa19dd596 100644
--- a/tools/perf/util/time-utils.c
+++ b/tools/perf/util/time-utils.c
@@ -7,7 +7,7 @@
 #include <errno.h>
 #include <inttypes.h>
 #include <math.h>
-#include <ctype.h>
+#include <linux/ctype.h>
 
 #include "perf.h"
 #include "debug.h"