diff --git a/core/shared/platform/baremetal/platform_init.c b/core/shared/platform/baremetal/platform_init.c
index c14cd93e..ffdccc59 100644
--- a/core/shared/platform/baremetal/platform_init.c
+++ b/core/shared/platform/baremetal/platform_init.c
@@ -125,7 +125,7 @@ os_mmap(void *hint, size_t size, int prot, int flags, os_file_handle file)
     size_t start = align_up(mmap_offset, PAGE_SIZE);
 
     // How much we're mapping
-    size_T end = start + align_up(size, PAGE_SIZE);
+    size_t end = start + align_up(size, PAGE_SIZE);
 
     if (end > MMAP_SPACE_SIZE) {
         return NULL;