diff --git a/tools/perf/tests/bp_account.c b/tools/perf/tests/bp_account.c
index 016bba2c142d..55a9de311d7b 100644
--- a/tools/perf/tests/bp_account.c
+++ b/tools/perf/tests/bp_account.c
@@ -23,7 +23,7 @@
 #include "../perf-sys.h"
 #include "cloexec.h"
 
-volatile long the_var;
+static volatile long the_var;
 
 static noinline int test_function(void)
 {