diff --git a/configure.ac b/configure.ac
index 94a92c7ce..094e6bd09 100644
--- a/configure.ac
+++ b/configure.ac
@@ -243,9 +243,6 @@ AC_SUBST(bzip2_bin)
 AC_SUBST(bzip2_bin_test)
 
 
-AC_CHECK_LIB(pthread, pthread_mutex_init)
-
-
 AC_ARG_ENABLE(init-state, AC_HELP_STRING([--disable-init-state],
   [do not initialise DB etc. in `make install']),
   init_state=$enableval, init_state=yes)