diff --git a/configure.ac b/configure.ac
index 965d60b3..a771822f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -146,7 +146,7 @@ AC_ARG_WITH(safecode,
 AC_ARG_WITH(ctgrind,
 [AS_HELP_STRING(--with-ctgrind,For maintainers only - please do not use)],
 [AS_IF([test "x$withval" = "xyes"], [
-    AC_CHECK_LIB(ctgrind, ct_poison, [LIBS="$LIBS -lctgrind"])
+    AC_CHECK_LIB(ctgrind, ct_poison)
   ])
 ])