diff --git a/Source/NSNumber.m b/Source/NSNumber.m
index a88267d8b..202f97ada 100644
--- a/Source/NSNumber.m
+++ b/Source/NSNumber.m
@@ -363,7 +363,11 @@ static BOOL useSmallRepeatingDouble;
 @implementation NSSmallInt
 #undef VALUE
 #define VALUE (((intptr_t)self) >> OBJC_SMALL_OBJECT_SHIFT)
+#if OBJC_SMALL_OBJECT_SHIFT == 1
 #define FORMAT @"%d"
+#else
+#define FORMAT @"%lld"
+#endif
 #include "NSNumberMethods.h"
 
 + (void) load