diff --git a/devtools/HIIRDesigner.cpp b/devtools/HIIRDesigner.cpp
index d857a449..bbb640fd 100644
--- a/devtools/HIIRDesigner.cpp
+++ b/devtools/HIIRDesigner.cpp
@@ -139,11 +139,13 @@ static std::vector<Stage> calculate_stages(int oversampling, double attenuation,
 
 static void generate_cpp_prologue(int argc, char *argv[])
 {
+    printf("//------------------------------------------------------------------------------\n");
     printf("// This is generated by the Sfizz HIIR designer\n");
     printf("// Using options:");
     for (int i = 1; i < argc; ++i)
         printf(" %s", argv[i]);
     printf("\n");
+    printf("//------------------------------------------------------------------------------\n");
 
     printf("\n");
 
diff --git a/src/sfizz/OversamplerHelpers.hxx b/src/sfizz/OversamplerHelpers.hxx
index bca26547..49cf3f60 100644
--- a/src/sfizz/OversamplerHelpers.hxx
+++ b/src/sfizz/OversamplerHelpers.hxx
@@ -4,8 +4,10 @@
 // license. You should have receive a LICENSE.md file along with the code.
 // If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
 
+//------------------------------------------------------------------------------
 // This is generated by the Sfizz HIIR designer
 // Using options: -a 96 -t 0.01 -o 128
+//------------------------------------------------------------------------------
 
 #pragma once
 #include "OversamplerHelpers.h"