diff --git a/examples/c++/Max_array.cpp b/examples/c++/Max_array.cpp
index bc2ef8799..45ea1c6a6 100644
--- a/examples/c++/Max_array.cpp
+++ b/examples/c++/Max_array.cpp
@@ -1,4 +1,4 @@
-void maxArray(double* x, double* y) {
+void maxArray(double* x, const double* y) {
     for (int i = 0; i < 65536; i++) {
         if (y[i] > x[i]) x[i] = y[i];
     }
diff --git a/examples/c++/Max_array_(Optimized).cpp b/examples/c++/Max_array_(Optimized).cpp
index a6256e93f..aa7dfde1b 100644
--- a/examples/c++/Max_array_(Optimized).cpp
+++ b/examples/c++/Max_array_(Optimized).cpp
@@ -1,7 +1,7 @@
 // Compile with -O3 -march=native to see autovectorization
 typedef double *__attribute__((aligned(64))) aligned_double;
 
-void maxArray(aligned_double __restrict x, aligned_double __restrict y) {
+void maxArray(aligned_double __restrict x, const aligned_double __restrict y) {
     for (int i = 0; i < 65536; i++) {
         x[i] = ((y[i] > x[i]) ? y[i] : x[i]);
     }
diff --git a/examples/c/Max_array.c b/examples/c/Max_array.c
index c1ab7c15b..e485502c3 100644
--- a/examples/c/Max_array.c
+++ b/examples/c/Max_array.c
@@ -1,4 +1,4 @@
-void maxArray(double* x, double* y) {
+void maxArray(double* x, const double* y) {
     int i;
 
     for (i = 0; i < 65536; i++) {