diff --git a/sys/amd64/include/segments.h b/sys/amd64/include/segments.h
index 27965116f61e..247cc34d6980 100644
--- a/sys/amd64/include/segments.h
+++ b/sys/amd64/include/segments.h
@@ -213,8 +213,8 @@ struct region_descriptor {
 #define	IDT_MC		18	/* #MC: Machine Check */
 #define	IDT_XF		19	/* #XF: SIMD Floating-Point Exception */
 #define	IDT_IO_INTS	NRSVIDT	/* Base of IDT entries for I/O interrupts. */
-#define	IDT_SYSCALL	0x80	/* System Call Interrupt Vector */
 #define	IDT_DTRACE_RET	0x20	/* DTrace pid provider Interrupt Vector */
+#define	IDT_SYSCALL	0x80	/* System Call Interrupt Vector */
 
 /*
  * Entries in the Global Descriptor Table (GDT)
diff --git a/sys/i386/include/segments.h b/sys/i386/include/segments.h
index 9e65c3ce402f..1a785d8b3480 100644
--- a/sys/i386/include/segments.h
+++ b/sys/i386/include/segments.h
@@ -206,8 +206,8 @@ struct region_descriptor {
 #define	IDT_MC		18	/* #MC: Machine Check */
 #define	IDT_XF		19	/* #XF: SIMD Floating-Point Exception */
 #define	IDT_IO_INTS	NRSVIDT	/* Base of IDT entries for I/O interrupts. */
-#define	IDT_SYSCALL	0x80	/* System Call Interrupt Vector */
 #define	IDT_DTRACE_RET	0x20	/* DTrace pid provider Interrupt Vector */
+#define	IDT_SYSCALL	0x80	/* System Call Interrupt Vector */
 
 /*
  * Entries in the Global Descriptor Table (GDT)