diff --git a/sys/powerpc/include/trap.h b/sys/powerpc/include/trap.h
index 22bb0d252be2..a8164d0f72e1 100644
--- a/sys/powerpc/include/trap.h
+++ b/sys/powerpc/include/trap.h
@@ -80,6 +80,9 @@
 #define	EXC_HEA		0x0e40		/* Hypervisor Emulation Assistance */
 #define	EXC_VSX		0x0f40		/* VSX Unavailable */
 
+/* Power ISA 2.07+: */
+#define	EXC_FAC		0x0f60		/* Facility Unavailable */
+
 /* The following are available on 4xx and 85xx */
 #define	EXC_CRIT	0x0100		/* Critical Input Interrupt */
 #define	EXC_PIT		0x1000		/* Programmable Interval Timer */
diff --git a/sys/powerpc/powerpc/trap.c b/sys/powerpc/powerpc/trap.c
index 7c1193010032..c72b631cca45 100644
--- a/sys/powerpc/powerpc/trap.c
+++ b/sys/powerpc/powerpc/trap.c
@@ -135,6 +135,7 @@ static struct powerpc_exception powerpc_exceptions[] = {
 	{ EXC_PERF,	"performance monitoring" },
 	{ EXC_VEC,	"altivec unavailable" },
 	{ EXC_VSX,	"vsx unavailable" },
+	{ EXC_FAC,	"facility unavailable" },
 	{ EXC_ITMISS,	"instruction tlb miss" },
 	{ EXC_DLMISS,	"data load tlb miss" },
 	{ EXC_DSMISS,	"data store tlb miss" },
@@ -279,6 +280,11 @@ trap(struct trapframe *frame)
 			enable_fpu(td);
 			break;
 
+		case EXC_FAC:
+			sig = SIGILL;
+			ucode =	ILL_ILLOPC;
+			break;
+
 		case EXC_VECAST_E:
 		case EXC_VECAST_G4:
 		case EXC_VECAST_G5: