diff --git a/sys/sparc64/sparc64/interrupt.S b/sys/sparc64/sparc64/interrupt.S
index fc144f4a9575..179eeb6400dc 100644
--- a/sys/sparc64/sparc64/interrupt.S
+++ b/sys/sparc64/sparc64/interrupt.S
@@ -83,13 +83,13 @@ ENTRY(intr_vector)
 	 * The 2nd word points to code to execute and the 3rd is an argument
 	 * to pass.  Jump to it.
 	 */
-	brnz,a,pt %g3, 1f
-	 srlx	%g3, 60, %g6
+	brnz,pt %g3, 1f
 	/*
 	 * NB: Zeus CPUs set some undocumented bits in the first data word.
 	 */
-	jmpl	%g4, %g0
 	 and	%g3, IV_MAX - 1, %g3
+	jmpl	%g4, %g0
+	 nop
 	/* NOTREACHED */
 
 	/*
@@ -98,7 +98,8 @@ ENTRY(intr_vector)
 	 * 4 bits of the 1st data word specify a priority, and the 2nd and
 	 * 3rd a function and argument.
 	 */
-1:	brnz,a,pn %g6, 2f
+1:	srlx	%g3, 60, %g6
+	brnz,a,pn %g6, 2f
 	 clr	%g3
 
 	/*