diff --git a/tests/core/Makefile b/tests/core/Makefile
index 12047f0ff80..8996e22419a 100644
--- a/tests/core/Makefile
+++ b/tests/core/Makefile
@@ -25,7 +25,8 @@ all: c_libc_test \
 	 strings_test \
 	 thread_test \
 	 runtime_test \
-	 time_test
+	 time_test \
+	 fmt_test
 
 download_test_assets:
 	$(PYTHON) download_assets.py
@@ -100,4 +101,4 @@ runtime_test:
 	$(ODIN) run runtime $(COMMON) -out:test_core_runtime
 
 time_test:
-	$(ODIN) run time $(COMMON) -out:test_core_time
+	$(ODIN) run time $(COMMON) -out:test_core_time
\ No newline at end of file
diff --git a/tests/core/build.bat b/tests/core/build.bat
index 36d2bb9c410..5dd2d19322e 100644
--- a/tests/core/build.bat
+++ b/tests/core/build.bat
@@ -107,4 +107,9 @@ echo ---
 echo ---
 echo Running core:time tests
 echo ---
-%PATH_TO_ODIN% run time %COMMON% %COLLECTION% -out:test_core_time.exe || exit /b
\ No newline at end of file
+%PATH_TO_ODIN% run time %COMMON% %COLLECTION% -out:test_core_time.exe || exit /b
+
+echo ---
+echo Running core:fmt tests
+echo ---
+%PATH_TO_ODIN% run fmt %COMMON% %COLLECTION% -out:test_core_fmt.exe || exit /b
\ No newline at end of file