diff --git a/compiler/aarch64/cpubase.pas b/compiler/aarch64/cpubase.pas
index 47676ffa4e..6d2a77f743 100644
--- a/compiler/aarch64/cpubase.pas
+++ b/compiler/aarch64/cpubase.pas
@@ -68,11 +68,17 @@ unit cpubase;
       { Available Superregisters }
       {$i ra64sup.inc}
 
+      RS_IP0 = RS_X16;
+      RS_IP1 = RS_X17;
+
       R_SUBWHOLE = R_SUBQ;
 
       { Available Registers }
       {$i ra64con.inc}
 
+      NR_IP0 = NR_X16;
+      NR_IP1 = NR_X17;
+
       { Integer Super registers first and last }
       first_int_supreg = RS_X0;
       { xzr and sp take up a separate super register because some instructions