diff --git a/components/nvs_flash/test_apps_bootloader/main/test_app_main.c b/components/nvs_flash/test_apps_bootloader/main/test_app_main.c
index 8c2912aff99..db5a169778f 100644
--- a/components/nvs_flash/test_apps_bootloader/main/test_app_main.c
+++ b/components/nvs_flash/test_apps_bootloader/main/test_app_main.c
@@ -14,7 +14,7 @@
 
 static size_t before_free_8bit;
 static size_t before_free_32bit;
-static size_t actual_leak_threshold = TEST_MEMORY_INITIAL_LEAK_THRESHOLD;
+static ssize_t actual_leak_threshold = TEST_MEMORY_INITIAL_LEAK_THRESHOLD;
 
 
 static void check_leak(size_t before_free, size_t after_free, const char *type)