diff --git a/compiler/nadd.pas b/compiler/nadd.pas
index 857b152aaf..3018e6cf42 100644
--- a/compiler/nadd.pas
+++ b/compiler/nadd.pas
@@ -1715,7 +1715,7 @@ implementation
              (left.resultdef.typ=orddef) and
              (left.nodetype=andn) and
              (right.nodetype=andn) and
-             not(is_boolean(resultdef) or not(might_have_sideeffects(self,[mhs_exceptions])) or not(doshortbooleval(self))) and
+             (not(is_boolean(resultdef)) or not(might_have_sideeffects(self,[mhs_exceptions])) or not(doshortbooleval(self))) and
              { this test is not needed but it speeds up the test and allows to bail out early }
              ((taddnode(left).left.nodetype=notn) or (taddnode(left).right.nodetype=notn) or
               (taddnode(right).left.nodetype=notn) or (taddnode(right).right.nodetype=notn)