diff --git a/src/gdt.c b/src/gdt.c
index 3a223cf..aa54e17 100644
--- a/src/gdt.c
+++ b/src/gdt.c
@@ -78,20 +78,20 @@ void init_gdt(void)
     // Code
     gdt[1] = init_descriptor((struct segment_desc_param) { .Limit_1 = 0xFFFF,
                             .Base = 0, .Type = 0x0B, .S = 1, .DPL = 0, .P = 1,
-                            .Limit_2 = 0x02, .AVL = 0, .L = 0, .D_B = 1, .G = 1 });
+                            .Limit_2 = 0x0F, .AVL = 0, .L = 0, .D_B = 1, .G = 1 });
     // Data
     gdt[2] = init_descriptor((struct segment_desc_param) { .Limit_1 = 0xFFFF,
                             .Base = 0, .Type = 2, .S = 1, .DPL = 0, .P = 1,
-                            .Limit_2 = 0x02, .AVL = 0, .L = 0, .D_B = 1, .G = 1 });
+                            .Limit_2 = 0x0F, .AVL = 0, .L = 0, .D_B = 1, .G = 1 });
     
     // Code
     gdt[3] = init_descriptor((struct segment_desc_param) { .Limit_1 = 0xFFFF,
-                            .Base = 0x30000, .Type = 0x0B, .S = 1, .DPL = 3, .P = 1,
+                            .Base = 0, .Type = 0x0B, .S = 1, .DPL = 3, .P = 1,
                             .Limit_2 = 0x0F, .AVL = 0, .L = 0, .D_B = 1, .G = 1 });
     
     // Data
     gdt[4] = init_descriptor((struct segment_desc_param) { .Limit_1 = 0xFFFF,
-                            .Base = 0x30000, .Type = 2, .S = 1, .DPL = 3, .P = 1,
+                            .Base = 0, .Type = 2, .S = 1, .DPL = 3, .P = 1,
                             .Limit_2 = 0x0F, .AVL = 0, .L = 0, .D_B = 1, .G = 1 });
     
     user_land_tss.ssp = 0x0;
diff --git a/src/launch_process.c b/src/launch_process.c
index 707299a..7986305 100644
--- a/src/launch_process.c
+++ b/src/launch_process.c
@@ -26,7 +26,7 @@ void launch_process(int tss, int memory_start, int userland_stack, int userland_
         and $0xffffbfff, %%eax  \n \
         push %%eax              \n \
         push %5                 \n \
-        push $0x0               \n \
+        push $0x30000               \n \
         movl $0x20000, %6       \n \
         movw %7, %%ax           \n \
         movw %%ax, %%ds         \n \
diff --git a/src/userland.c b/src/userland.c
index 83c36f2..51821fb 100644
--- a/src/userland.c
+++ b/src/userland.c
@@ -7,14 +7,14 @@ void userland(void)
     // asm volatile ("movl $2, %eax; int $0x30");
     // asm("movl %%eax,%0" : "=r"(res));
     // asm volatile ("int $0x30");
-    char *str = (void *) 0x100;
+    char *str = (void *) 0x30100;
     str[0] = 'H';
     str[1] = 'e';
     str[2] = 'l';
     str[3] = 'l';
     str[4] = 'o';
     str[5] = '\0';
-    asm volatile ("mov $1, %%eax; movl $0x30100, %%ebx; int $0x30; movl %%eax, %0" : "=r" (res));
+    asm volatile ("mov $1, %%eax; movl $0x30100, %%ebx; int $0x30; movl %%eax, %1" : "=m" (str), "=r" (res));
     // asm volatile ("mov $1, %%eax; movl %0, %%ebx; int $0x30" : "=m" (str));
     // asm ("mov $1, %eax; int $0x30");
     // asm ("movl %0, %eax; int $0x30" : "=m" (res));