diff --git a/src/tester/tester.c b/src/tester/tester.c
index ab90205..b81d906 100644
--- a/src/tester/tester.c
+++ b/src/tester/tester.c
@@ -1,6 +1,7 @@
 #include "tester.h"
 #include "aliases.h"
 #include "termcolour.h"
+#include "str8.h"
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -31,20 +32,20 @@ void run_tests(TestFunc *func1, ...) {
 
 internal void handle_test_result(TestFuncResult result) {
   TerminalColour colour;
-  const char *result_text;
+  Str8 result_text;
 
   if (result.passed) {
     colour = WAPP_TERM_COLOUR_FG_BR_GREEN;
-    result_text = "PASSED";
+    result_text = wapp_str8_lit("PASSED");
   } else {
     colour = WAPP_TERM_COLOUR_FG_BR_RED;
-    result_text = "FAILED";
+    result_text = wapp_str8_lit("FAILED");
   }
 
   printf("[");
-  wapp_shell_termcolour_print_text(result_text, colour);
+  wapp_shell_termcolour_print_text(&result_text, colour);
   wapp_shell_termcolour_clear_colour();
-  printf("] %s\n", result.name);
+  printf("] " WAPP_STR8_SPEC "\n", wapp_str8_varg(result.name));
 
   if (!result.passed) {
     exit(EXIT_FAILURE);
diff --git a/src/tester/tester.h b/src/tester/tester.h
index cfbd7ed..f3c61a4 100644
--- a/src/tester/tester.h
+++ b/src/tester/tester.h
@@ -3,22 +3,23 @@
 
 #include "misc_utils.h"
 #include "platform.h"
+#include "str8.h"
 #include <stdbool.h>
 
 #ifdef __cplusplus
 BEGIN_C_LINKAGE
 #endif // __cplusplus
 
-#define wapp_tester_result(PASSED) ((TestFuncResult){.name = __func__, .passed = PASSED})
+#define wapp_tester_result(PASSED) ((TestFuncResult){.name = wapp_str8_lit_ro(__func__), .passed = PASSED})
 #define wapp_tester_run_tests(...) run_tests(__VA_ARGS__, NULL)
 
 typedef struct test_func_result TestFuncResult;
 struct test_func_result {
-  const char *name;
+  Str8RO name;
   bool passed;
 
 #ifdef WAPP_PLATFORM_WINDOWS
-  wapp_misc_utils_padding_size(sizeof(const char *) + sizeof(bool));
+  wapp_misc_utils_padding_size(sizeof(Str8RO) + sizeof(bool));
 #endif // WAPP_PLATFORM_WINDOWS
 };