4 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
index 73bdd07321c4..a4d3762cd825 100644
--- a/tools/perf/ui/browser.c
+++ b/tools/perf/ui/browser.c
@@ -1,4 +1,5 @@
 #include "../util.h"
+#include "../string2.h"
 #include "../config.h"
 #include "../../perf.h"
 #include "libslang.h"
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index ac7f6a3e4a86..bc397bbbc3a7 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -20,6 +20,7 @@
 #include "map.h"
 #include "annotate.h"
 #include "srcline.h"
+#include "string2.h"
 
 #include "sane_ctype.h"
 
diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c
index a4f02de7c1b5..c42de4dcc055 100644
--- a/tools/perf/ui/gtk/hists.c
+++ b/tools/perf/ui/gtk/hists.c
@@ -4,6 +4,7 @@
 #include "../sort.h"
 #include "../hist.h"
 #include "../helpline.h"
+#include "../string2.h"
 #include "gtk.h"
 
 #define MAX_COLUMNS			32
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index 66aa4eb369f1..5565105c9688 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -5,6 +5,7 @@
 #include "../../util/sort.h"
 #include "../../util/evsel.h"
 #include "../../util/srcline.h"
+#include "../../util/string2.h"
 #include "../../util/sane_ctype.h"
 
 static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin)