diff --git a/src/tools/builtin.jam b/src/tools/builtin.jam
index 962df6e6f..28cf8c412 100644
--- a/src/tools/builtin.jam
+++ b/src/tools/builtin.jam
@@ -205,6 +205,8 @@ feature architecture :
     power
     # MIPS/SGI
     mips1 mips2 mips3 mips4 mips32 mips32r2 mips64
+    # HP/PA-RISC
+    parisc
     #
     : propagated optional ;
 
@@ -237,6 +239,8 @@ feature instruction-set :
     r2000 r3000 r3900 r4000 r4100 r4300 r4400 r4600 r4650 r6000 r8000
     rm7000 rm9000 orion sb1
     vr4100 vr4111 vr4120 vr4130 vr4300 vr5000 vr5400 vr5500
+    # HP/PA-RISC
+    700 7100 7100lc 7200 7300 8000
     #
     : propagated optional ;