diff --git a/macbuild/build4mac.py b/macbuild/build4mac.py
index 24aafd699..1bb775bea 100755
--- a/macbuild/build4mac.py
+++ b/macbuild/build4mac.py
@@ -376,9 +376,9 @@ def RunMainBuildBash():
 
   # (C) want Qt bindings with Ruby scripts?
   if NoQtBindings:
-    parameters += "\\\n  -without-qtbinding"
+    parameters += " \\\n  -without-qtbinding"
   else:
-    parameters += "\\\n  -with-qtbinding"
+    parameters += " \\\n  -with-qtbinding"
 
   # (D) options to `make` tool
   if not MakeOptions == "":
diff --git a/macbuild/build4mac_env.py b/macbuild/build4mac_env.py
index 7dce1cdf3..525784145 100755
--- a/macbuild/build4mac_env.py
+++ b/macbuild/build4mac_env.py
@@ -123,18 +123,22 @@ PythonHighSierra= { 'exe': '/System/Library/Frameworks/Python.framework/Versions
                   }
 
 # Using anaconda (https://www.anaconda.com/download/#macos): *+*+*+ EXPERIMENTAL *+*+*+
-#   prepared by: $ conda create -n py27klayout python=2.7
+#   If the path to your `conda` command is '$HOME/anaconda/bin/conda'
+#   and your Python environment was prepared by: $ conda create -n py27klayout python=2.7
+#
 #   No additional modules are added in the beginning.
 Anaconda27      = { 'exe': '$HOME/anaconda/envs/py27klayout/bin/python2.7' ,
-                    'inc': '$HOME/anaconda/envs/py27klayout/include',
+                    'inc': '$HOME/anaconda/envs/py27klayout/include/python2.7',
                     'lib': '$HOME/anaconda/envs/py27klayout/lib/libpython2.7.dylib'
                   }
 
 # Using anaconda (https://www.anaconda.com/download/#macos): *+*+*+ EXPERIMENTAL *+*+*+
-#   prepared by: $ conda create -n py36klayout python=3.6
+#   If the path to your `conda` command is '$HOME/anaconda/bin/conda'
+#   and your Python environment was prepared by: $ conda create -n py36klayout python=3.6
+#
 #   No additional modules are added in the beginning.
 Anaconda36      = { 'exe': '$HOME/anaconda/envs/py36klayout/bin/python3.6' ,
-                    'inc': '$HOME/anaconda/envs/py36klayout/include',
+                    'inc': '$HOME/anaconda/envs/py36klayout/include/python3.6m',
                     'lib': '$HOME/anaconda/envs/py36klayout/lib/libpython3.6m.dylib'
                   }