diff --git a/src/parisc/head.S b/src/parisc/head.S
index 8734704..c4df7f0 100644
--- a/src/parisc/head.S
+++ b/src/parisc/head.S
@@ -512,6 +512,7 @@
 	stw %arg2,-44(%sp)
 	stw %arg3,-48(%sp)
 	ldo -FRAME_SIZE(%sp),%arg0
+	ldi 1,%arg1		/* called with wide-bit cleared (narrow mode) */
 
 	loadgp
 	load32		MEM_PDC_ENTRY + 1f - pdc_entry_table,%rp
@@ -566,6 +567,7 @@
 	std %arg0, -0x58(%sp)
 
 	ldo -0x58(%sp),%arg0	/* points to arg7 */
+	ldi 1,%arg1		/* called with wide-bit cleared (narrow mode) */
 
 	loadgp
 	load32_firmware parisc_pdc_entry,%r1
@@ -614,6 +616,7 @@
 	std %r20, -0x50(%sp)
 	std %r19, -0x58(%sp)
 	ldo -0x58(%sp),%arg0	/* points to arg7 */
+	ldi 0,%arg1		/* called with wide-bit set (not narrow) */
 
 	loadgp
 	b,l parisc_pdc_entry, %rp
diff --git a/src/parisc/parisc.c b/src/parisc/parisc.c
index 1a0c97e..1c7b109 100644
--- a/src/parisc/parisc.c
+++ b/src/parisc/parisc.c
@@ -2364,7 +2364,7 @@
 }
 
 
-int __VISIBLE parisc_pdc_entry(unsigned long *arg)
+int __VISIBLE parisc_pdc_entry(unsigned long *arg, unsigned long narrow_mode)
 {
     unsigned long proc = ARG0;
     unsigned long option = ARG1;