diff --git a/ex21.c b/ex21.c
index a170b9d..695e1c4 100644
--- a/ex21.c
+++ b/ex21.c
@@ -113,9 +113,9 @@ int main(int argc, char *argv[])
     printf("UINTPTR_MAX = %d\n", UINTPTR_MAX);
     printf("sizeof(intmax_t) = %d\n", sizeof(intmax_t));
     printf("sizeof(uintmax_t) = %d\n", sizeof(uintmax_t));
-    printf("INTMAX_MAX = %d\n", INTMAX_MAX);
-    printf("INTMAX_MIN = %d\n", INTMAX_MIN);
-    printf("UINTMAX_MAX = %d\n", UINTMAX_MAX);
+    printf("INTMAX_MAX = %lld\n", INTMAX_MAX);
+    printf("INTMAX_MIN = %lld\n", INTMAX_MIN);
+    printf("UINTMAX_MAX = %lld\n", UINTMAX_MAX);
     printf("PTRDIFF_MIN = %d\n", PTRDIFF_MIN);
     printf("PTRDIFF_MAX = %d\n", PTRDIFF_MAX);
     printf("SIZE_MAX = %d\n", SIZE_MAX);