diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 1ea06fde14e0..31715366e29f 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1336,7 +1336,7 @@ static char *get_kernel_version(const char *root_dir)
 	char *name, *tmp;
 	const char *prefix = "Linux version ";
 
-	sprintf(version, "%s/proc/version", root_dir);
+	snprintf(version, sizeof(version), "%s/proc/version", root_dir);
 	file = fopen(version, "r");
 	if (!file)
 		return NULL;
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 2cc911af8c81..cd379ced19e5 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -2283,7 +2283,7 @@ static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map)
 		if (!kallsyms_filename)
 			return -1;
 	} else {
-		sprintf(path, "%s/proc/kallsyms", machine->root_dir);
+		snprintf(path, sizeof(path), "%s/proc/kallsyms", machine->root_dir);
 		kallsyms_filename = path;
 	}