diff --git a/src/cpu/intel/microcode/microcode_asm.S b/src/cpu/intel/microcode/microcode_asm.S
index f02351a5ed..5173ae5a0c 100644
--- a/src/cpu/intel/microcode/microcode_asm.S
+++ b/src/cpu/intel/microcode/microcode_asm.S
@@ -43,6 +43,7 @@
  * if the revision of the update is newer than what is installed
  */
 
+.code32
 .section .text
 .global update_bsp_microcode