diff --git a/compiler/ncal.pas b/compiler/ncal.pas
index da2876978d..80b59597db 100644
--- a/compiler/ncal.pas
+++ b/compiler/ncal.pas
@@ -3045,7 +3045,7 @@ implementation
           is_const:=(po_internconst in procdefinition.procoptions) and
                     ((block_type in [bt_const,bt_type,bt_const_type,bt_var_type]) or
                      (assigned(left) and ((tcallparanode(left).left.nodetype in [realconstn,ordconstn])
-                      and not assigned(tcallparanode(left).right) or (tcallparanode(left).right.nodetype in [realconstn,ordconstn]))));
+                      and (not assigned(tcallparanode(left).right) or (tcallparanode(left).right.nodetype in [realconstn,ordconstn])))));
           if (procdefinition.proccalloption=pocall_internproc) or is_const then
            begin
              if assigned(left) then