diff --git a/lib/libfdt/fdt.c b/lib/libfdt/fdt.c
index 673bab44e6..b548d5cf05 100644
--- a/lib/libfdt/fdt.c
+++ b/lib/libfdt/fdt.c
@@ -14,7 +14,7 @@
 
 #include "libfdt_internal.h"
 
-#define UINT_MAX	(~0U)
+#define ULONG_MAX       (~0UL)
 
 int fdt_check_header(const void *fdt)
 {
@@ -41,13 +41,13 @@ int fdt_check_header(const void *fdt)
 	}
 	fdt_end = fdt_start + fdt_totalsize(fdt);
 
-	if (((uint64_t)fdt_start + (uint64_t)fdt_off_dt_struct(fdt) + (uint64_t)fdt_size_dt_struct(fdt)) > UINT_MAX)
+	if (((uint64_t)fdt_start + (uint64_t)fdt_off_dt_struct(fdt) + (uint64_t)fdt_size_dt_struct(fdt)) > ULONG_MAX)
 		return FDT_ERR_BADOFFSET;
 
 	if ((fdt_start + fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt)) > fdt_end)
 		return FDT_ERR_BADOFFSET;
 
-	if (((uint64_t)fdt_start + (uint64_t)fdt_off_dt_strings(fdt) + (uint64_t)fdt_size_dt_strings(fdt)) > UINT_MAX)
+	if (((uint64_t)fdt_start + (uint64_t)fdt_off_dt_strings(fdt) + (uint64_t)fdt_size_dt_strings(fdt)) > ULONG_MAX)
 		return FDT_ERR_BADOFFSET;
 
 	if ((fdt_start + fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt)) > fdt_end)