diff --git a/soc/x86/atom/soc.h b/soc/x86/atom/soc.h
index 2b05a295ad0..6901b78415c 100644
--- a/soc/x86/atom/soc.h
+++ b/soc/x86/atom/soc.h
@@ -22,8 +22,6 @@
 #include <random/rand32.h>
 #endif
 
-#define INT_VEC_IRQ0 0x20 /* vector number for IRQ0 */
-
 /*
  * UART
  */
diff --git a/soc/x86/ia32/soc.h b/soc/x86/ia32/soc.h
index 2b64a83adb7..6561f552dd7 100644
--- a/soc/x86/ia32/soc.h
+++ b/soc/x86/ia32/soc.h
@@ -27,7 +27,6 @@
  */
 #define UART_NS16550_ACCESS_IOPORT
 
-#define INT_VEC_IRQ0 0x20 /* Vector number for IRQ0 */
 /* PCI definitions */
 #define PCI_BUS_NUMBERS 1