diff --git a/Part3/09_memory/kernel/kernel.c b/Part3/09_memory/kernel/kernel.c
index b2b2daa..e78ea74 100644
--- a/Part3/09_memory/kernel/kernel.c
+++ b/Part3/09_memory/kernel/kernel.c
@@ -39,7 +39,11 @@
             if (sstrlen(input, 15) > 4) {
                 char *number = input + 4;
                 u32 result = digit_conver(number);
-                if (result < 10000 || result == -1) {
+                int nDigits = floor(log10(abs(result))) + 1;
+                if (sstrlen(*number, 15) > nDigits + 4) {
+                    kprint("There is a limit");
+                }
+                if (result < 10000) {
                     kprint("That memory address is reserved by the Kernel, addresses must be 10000+");
                 } else {
                     umem_head = add_node( umem_head, result, 0x100, true, global_id++);
@@ -120,8 +124,7 @@
                 int digit = (hexChar >= '0' && hexChar <= '9') ? (hexChar - '0') : (10 + (hexChar - 'A'));
                 result = result * 16 + digit;
             } else {
-                kprint("Invalid hex input\n");
-                return -1;
+                break;
             }
             hexString++;
         }