diff --git a/configure.ac b/configure.ac
index 9b1c43a5b62..ce501aef4d2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -856,8 +856,6 @@ esac
 
 if test "x$pthread_stubs_possible" = xyes; then
     PKG_CHECK_MODULES(PTHREADSTUBS, pthread-stubs >= 0.4)
-    AC_SUBST(PTHREADSTUBS_CFLAGS)
-    AC_SUBST(PTHREADSTUBS_LIBS)
 fi
 
 dnl SELinux awareness.