diff --git a/configure.ac b/configure.ac
index ca75136474e..d397e8fa7e1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -5153,8 +5153,6 @@ elif test "$opsys" = "mingw32"; then
   CYGWIN_OBJ=
   PRE_ALLOC_OBJ=
   POST_ALLOC_OBJ=lastfile.o
-elif test "$opsys" = "qnxnto"; then
-  CYGWIN_OBJ=sheap.o
 else
   CYGWIN_OBJ=
   PRE_ALLOC_OBJ=lastfile.o