diff --git a/octave/liboctave/array/Range.cc b/octave/liboctave/array/Range.cc

index 7691ca4..0ab319f 100644

--- a/octave/liboctave/array/Range.cc

+++ b/octave/liboctave/array/Range.cc

@@ -495,11 +495,11 @@ tfloor (double x, double ct)

   double rmax = q / (2.0 - ct);

-  double t1 = 1.0 + gnulib::floor (x);

+  double t1 = 1.0 + std::floor (x);

   t1 = (ct / q) * (t1 < 0.0 ? -t1 : t1);

   t1 = rmax < t1 ? rmax : t1;

   t1 = ct > t1 ? ct : t1;

-  t1 = gnulib::floor (x + t1);

+  t1 = std::floor (x + t1);

   if (x <= 0.0 || (t1 - x) < rmax)

     return t1;