diff --git a/AHFinderDirect/interface.ccl b/AHFinderDirect/interface.ccl
index 7891212f..8826d96e 100644
--- a/AHFinderDirect/interface.ccl
+++ b/AHFinderDirect/interface.ccl
@@ -148,3 +148,20 @@ FUNCTION sf_IdFromName (CCTK_INT IN id, CCTK_POINTER_TO_CONST IN name)
 USES FUNCTION sf_IdFromName
 
 ################################################################################
+
+# CarpetX Interpolator
+CCTK_INT FUNCTION DriverInterpolate(
+  CCTK_POINTER_TO_CONST IN cctkGH,
+  CCTK_INT IN N_dims,
+  CCTK_INT IN local_interp_handle,
+  CCTK_INT IN param_table_handle,
+  CCTK_INT IN coord_system_handle,
+  CCTK_INT IN N_interp_points,
+  CCTK_INT IN interp_coords_type,
+  CCTK_POINTER_TO_CONST ARRAY IN interp_coords,
+  CCTK_INT IN N_input_arrays,
+  CCTK_INT ARRAY IN input_array_indices,
+  CCTK_INT IN N_output_arrays,
+  CCTK_INT ARRAY IN output_array_types,
+  CCTK_POINTER ARRAY IN output_arrays)
+REQUIRES FUNCTION DriverInterpolate
diff --git a/AHFinderDirect/src/gr/expansion.cc b/AHFinderDirect/src/gr/expansion.cc
index c3ca3c07..8f4b4121 100644
--- a/AHFinderDirect/src/gr/expansion.cc
+++ b/AHFinderDirect/src/gr/expansion.cc
@@ -826,7 +826,7 @@ sleep(1);
 CCTK_Barrier(cgi.GH);
 #endif
 
-status = CCTK_InterpGridArrays(cgi.GH, N_GRID_DIMS,
+status = DriverInterpolate(cgi.GH, N_GRID_DIMS,
 			       gi.operator_handle, gi.param_table_handle,
 			       cgi.coord_system_handle,
 			       N_interp_points,
diff --git a/PunctureTracker/interface.ccl b/PunctureTracker/interface.ccl
index abfeced8..dd58112e 100644
--- a/PunctureTracker/interface.ccl
+++ b/PunctureTracker/interface.ccl
@@ -17,3 +17,19 @@ CCTK_REAL pt_vel[10] TYPE=scalar
 {
   pt_vel_t pt_vel_x pt_vel_y pt_vel_z
 } "Velocity of punctures"
+
+CCTK_INT FUNCTION DriverInterpolate(
+  CCTK_POINTER_TO_CONST IN cctkGH,
+  CCTK_INT IN N_dims,
+  CCTK_INT IN local_interp_handle,
+  CCTK_INT IN param_table_handle,
+  CCTK_INT IN coord_system_handle,
+  CCTK_INT IN N_interp_points,
+  CCTK_INT IN interp_coords_type,
+  CCTK_POINTER_TO_CONST ARRAY IN interp_coords,
+  CCTK_INT IN N_input_arrays,
+  CCTK_INT ARRAY IN input_array_indices,
+  CCTK_INT IN N_output_arrays,
+  CCTK_INT ARRAY IN output_array_types,
+  CCTK_POINTER ARRAY IN output_arrays)
+REQUIRES FUNCTION DriverInterpolate
diff --git a/PunctureTracker/src/puncture_tracker.cc b/PunctureTracker/src/puncture_tracker.cc
index 89110129..2ad9e9a5 100644
--- a/PunctureTracker/src/puncture_tracker.cc
+++ b/PunctureTracker/src/puncture_tracker.cc
@@ -106,7 +106,7 @@ extern "C" void PunctureTracker_Track(CCTK_ARGUMENTS) {
 
   // Interpolation operator
   const int operator_handle =
-      CCTK_InterpHandle("Lagrange polynomial interpolation");
+      CCTK_InterpHandle("CarpetX");
   if (operator_handle < 0) {
     CCTK_WARN(CCTK_WARN_ALERT, "Can't get interpolation handle");
     return;
@@ -169,7 +169,7 @@ extern "C" void PunctureTracker_Track(CCTK_ARGUMENTS) {
 
     // Interpolate
     int ierr;
-    ierr = CCTK_InterpGridArrays(
+    ierr = DriverInterpolate(
         cctkGH, dim, operator_handle, param_table_handle, coordsys_handle,
         num_points, CCTK_VARIABLE_REAL, interp_coords, num_vars,
         input_array_indices, num_vars, output_array_type_codes, output_arrays);