diff --git a/mozilla/configure b/mozilla/configure
index 8935166e18d..20a2f6700d0 100755
--- a/mozilla/configure
+++ b/mozilla/configure
@@ -7936,7 +7936,7 @@ fi
 echo "$ac_t""$ac_cv_func_memcmp_clean" 1>&6
 test $ac_cv_func_memcmp_clean = no && LIBOBJS="$LIBOBJS memcmp.${ac_objext}"
 
-for ac_func in random qsort strerror lchown fchmod snprintf localtime_r statvfs
+for ac_func in random qsort strerror lchown fchmod snprintf localtime_r statvfs memmove
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
 echo "configure:7943: checking for $ac_func" >&5