diff --git a/src/experimental/__impl__/_mz_blocks_impl.scad b/src/experimental/__impl__/_mz_blocks_impl.scad
index 0a3f01ca..81f72ec6 100644
--- a/src/experimental/__impl__/_mz_blocks_impl.scad
+++ b/src/experimental/__impl__/_mz_blocks_impl.scad
@@ -1,4 +1,4 @@
-use <experimental/__impl__/_mz_comm.scad>;
+use <experimental/_impl/_mz_comm.scad>;
 
 // create a starting maze for being visited later.
 function starting_maze(rows, columns) =  [
diff --git a/src/experimental/__impl__/_mz_walls_impl.scad b/src/experimental/__impl__/_mz_walls_impl.scad
index 82a11144..e8bf7b87 100644
--- a/src/experimental/__impl__/_mz_walls_impl.scad
+++ b/src/experimental/__impl__/_mz_walls_impl.scad
@@ -1,4 +1,4 @@
-use <experimental/__impl__/_mz_comm.scad>;
+use <experimental/_impl/_mz_comm.scad>;
 
 function block_walls(block, block_width) = 
     let(
diff --git a/src/experimental/mz_blocks.scad b/src/experimental/mz_blocks.scad
index 2c7982af..7ed4b866 100644
--- a/src/experimental/mz_blocks.scad
+++ b/src/experimental/mz_blocks.scad
@@ -1,4 +1,4 @@
-use <experimental/__impl__/_mz_blocks_impl.scad>;
+use <experimental/_impl/_mz_blocks_impl.scad>;
 
 function mz_blocks(start, rows, columns, maze, x_circular = false, y_circular = false) = 
     go_maze( 
diff --git a/src/experimental/mz_walls.scad b/src/experimental/mz_walls.scad
index 5f4b3a70..45fdc02b 100644
--- a/src/experimental/mz_walls.scad
+++ b/src/experimental/mz_walls.scad
@@ -1,4 +1,4 @@
-use <experimental/__impl__/_mz_walls_impl.scad>;
+use <experimental/_impl/_mz_walls_impl.scad>;
 
 function mz_walls(blocks, rows, columns, block_width, left_border = true, bottom_border = true) = 
     let(
diff --git a/src/experimental/sf_square.scad b/src/experimental/sf_square.scad
index 8e297228..ce12358b 100644
--- a/src/experimental/sf_square.scad
+++ b/src/experimental/sf_square.scad
@@ -1,3 +1,4 @@
+use <experimental/_impl/sf_solidify.scad>;
 use <experimental/sf_solidify.scad>;
 
 /*