diff --git a/src/arch/x86_64/long_mode_init.asm b/src/arch/x86_64/long_mode_init.asm
index 387c2fa4..a8193beb 100644
--- a/src/arch/x86_64/long_mode_init.asm
+++ b/src/arch/x86_64/long_mode_init.asm
@@ -13,10 +13,14 @@
 ; limitations under the License.
 
 global long_mode_start
+extern main
 
 section .text
 bits 64
 long_mode_start:
+
+    ; call rust main
+    call main
     ; print `OKAY` to screen
     mov rax, 0x2f592f412f4b2f4f
     mov qword [0xb8000], rax