diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 6740d6812691df9db3345bce49f9e7ff9d9798d4..e4b889444447d410687b7a5d640717da9a6c74e3 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -47,7 +47,6 @@
 #include "probe-file.h"
 #include "session.h"
 
-#define MAX_CMDLEN 256
 #define PERFPROBE_GROUP "probe"
 
 bool probe_event_dry_run;	/* Dry run flag */
diff --git a/tools/perf/util/probe-file.c b/tools/perf/util/probe-file.c
index 1542cd0d67991d1ffc204a63d82d9fbe0ac8e5e6..c3c287125be5afe130349adc17de91b353a918b7 100644
--- a/tools/perf/util/probe-file.c
+++ b/tools/perf/util/probe-file.c
@@ -28,7 +28,8 @@
 #include "probe-file.h"
 #include "session.h"
 
-#define MAX_CMDLEN 256
+/* 4096 - 2 ('\n' + '\0') */
+#define MAX_CMDLEN 4094
 
 static void print_open_warning(int err, bool uprobe)
 {