diff --git a/samples/rocjpeg_samples_utils.h b/samples/rocjpeg_samples_utils.h
index ec8f939937..83d6d1ba3f 100644
--- a/samples/rocjpeg_samples_utils.h
+++ b/samples/rocjpeg_samples_utils.h
@@ -620,7 +620,7 @@ public:
     }
 
 private:
-    static const int mem_alignment = 1024 * 1024;
+    static const int mem_alignment = 4 * 1024 * 1024;
     /**
      * @brief Shows the help message and exits.
      *