diff --git a/include/mimalloc-stats.h b/include/mimalloc-stats.h
index 4dc4c381..7c1ed770 100644
--- a/include/mimalloc-stats.h
+++ b/include/mimalloc-stats.h
@@ -92,8 +92,8 @@ typedef struct mi_stats_s
 extern "C" {
 #endif
 
-mi_decl_export void        mi_stats_get( size_t stats_size, mi_stats_t* stats ) mi_attr_noexcept;
-mi_decl_export const char* mi_stats_get_json( size_t buf_size, char* buf ) mi_attr_noexcept;    // use mi_free to free the result if the input buf == NULL
+mi_decl_export void  mi_stats_get( size_t stats_size, mi_stats_t* stats ) mi_attr_noexcept;
+mi_decl_export char* mi_stats_get_json( size_t buf_size, char* buf ) mi_attr_noexcept;    // use mi_free to free the result if the input buf == NULL
 
 #ifdef __cplusplus
 }
diff --git a/src/stats.c b/src/stats.c
index 36c7f23c..d9b26863 100644
--- a/src/stats.c
+++ b/src/stats.c
@@ -539,7 +539,7 @@ static void mi_heap_buf_print_counter_value(mi_heap_buf_t* hbuf, const char* nam
 #define MI_STAT_COUNT(stat)    mi_heap_buf_print_count_value(&hbuf, #stat, &stats->stat);
 #define MI_STAT_COUNTER(stat)  mi_heap_buf_print_counter_value(&hbuf, #stat, &stats->stat);
 
-const char* mi_stats_get_json(size_t output_size, char* output_buf) mi_attr_noexcept {
+char* mi_stats_get_json(size_t output_size, char* output_buf) mi_attr_noexcept {
   mi_heap_buf_t hbuf = { NULL, 0, 0, true };
   if (output_size > 0 && output_buf != NULL) {
     _mi_memzero(output_buf, output_size);
diff --git a/test/test-stress.c b/test/test-stress.c
index 43d06ad5..9e041064 100644
--- a/test/test-stress.c
+++ b/test/test-stress.c
@@ -331,9 +331,9 @@ int main(int argc, char** argv) {
   #ifndef NDEBUG
   mi_debug_show_arenas();
   mi_collect(true);
-  const char* json = mi_stats_get_json(0, NULL);
+  char* json = mi_stats_get_json(0, NULL);
   if (json != NULL) {
-    puts(json);
+    fputs(json,stderr);
     mi_free(json);
   }
   #endif