diff --git a/configure.in b/configure.in
index 1dfc4c5e41..ed641f477e 100644
--- a/configure.in
+++ b/configure.in
@@ -768,6 +768,7 @@ AC_CHECK_FUNCS( socket \
                 select \
                 strdup \
                 strstr \
+                strtok_r \
                 strftime \
                 uname \
                 strcasecmp \