diff --git a/tests/legacy/benchmark/footprint/nanokernel/src/nanokernel_footprint.c b/tests/legacy/benchmark/footprint/nanokernel/src/nanokernel_footprint.c
index 52a73162f73..ba6967c2462 100644
--- a/tests/legacy/benchmark/footprint/nanokernel/src/nanokernel_footprint.c
+++ b/tests/legacy/benchmark/footprint/nanokernel/src/nanokernel_footprint.c
@@ -114,9 +114,9 @@ static void fiberEntry(int message,	int arg1)
 	ARG_UNUSED(arg1);
 
 #ifdef TEST_max
-	printf((char *)message);
+	printf("%s", (char *)message);
 #else
-	printk((char *)message);
+	printk("%s", (char *)message);
 #endif /* TEST_max */
 }