diff --git a/Examples/python/import_packages/Makefile b/Examples/python/import_packages/Makefile
index dfd46d05c..34362f65a 100644
--- a/Examples/python/import_packages/Makefile
+++ b/Examples/python/import_packages/Makefile
@@ -2,7 +2,6 @@ TOP        = ../..
 SWIG       = $(realpath $(TOP)/../preinst-swig)
 SWIGOPT    =
 LIBS       =
-PY3        =
 
 import_packages_subdirs = \
 	same_modnames1 \
diff --git a/Examples/python/import_packages/from_init1/Makefile b/Examples/python/import_packages/from_init1/Makefile
index b9d803a0e..dd38f90bd 100644
--- a/Examples/python/import_packages/from_init1/Makefile
+++ b/Examples/python/import_packages/from_init1/Makefile
@@ -2,7 +2,6 @@ TOP        = ../../..
 SWIG       = $(realpath $(TOP)/../preinst-swig)
 SWIGOPT    =
 LIBS       =
-PY3        =
 
 ifeq (,$(PY3))
   PKG1DIR  = "py2"
diff --git a/Examples/python/import_packages/from_init2/Makefile b/Examples/python/import_packages/from_init2/Makefile
index b9d803a0e..dd38f90bd 100644
--- a/Examples/python/import_packages/from_init2/Makefile
+++ b/Examples/python/import_packages/from_init2/Makefile
@@ -2,7 +2,6 @@ TOP        = ../../..
 SWIG       = $(realpath $(TOP)/../preinst-swig)
 SWIGOPT    =
 LIBS       =
-PY3        =
 
 ifeq (,$(PY3))
   PKG1DIR  = "py2"
diff --git a/Examples/python/import_packages/from_init3/Makefile b/Examples/python/import_packages/from_init3/Makefile
index b9d803a0e..dd38f90bd 100644
--- a/Examples/python/import_packages/from_init3/Makefile
+++ b/Examples/python/import_packages/from_init3/Makefile
@@ -2,7 +2,6 @@ TOP        = ../../..
 SWIG       = $(realpath $(TOP)/../preinst-swig)
 SWIGOPT    =
 LIBS       =
-PY3        =
 
 ifeq (,$(PY3))
   PKG1DIR  = "py2"
diff --git a/Examples/python/import_packages/relativeimport1/Makefile b/Examples/python/import_packages/relativeimport1/Makefile
index b9d803a0e..dd38f90bd 100644
--- a/Examples/python/import_packages/relativeimport1/Makefile
+++ b/Examples/python/import_packages/relativeimport1/Makefile
@@ -2,7 +2,6 @@ TOP        = ../../..
 SWIG       = $(realpath $(TOP)/../preinst-swig)
 SWIGOPT    =
 LIBS       =
-PY3        =
 
 ifeq (,$(PY3))
   PKG1DIR  = "py2"
diff --git a/Examples/python/import_packages/relativeimport2/Makefile b/Examples/python/import_packages/relativeimport2/Makefile
index b9d803a0e..dd38f90bd 100644
--- a/Examples/python/import_packages/relativeimport2/Makefile
+++ b/Examples/python/import_packages/relativeimport2/Makefile
@@ -2,7 +2,6 @@ TOP        = ../../..
 SWIG       = $(realpath $(TOP)/../preinst-swig)
 SWIGOPT    =
 LIBS       =
-PY3        =
 
 ifeq (,$(PY3))
   PKG1DIR  = "py2"
diff --git a/Examples/python/import_packages/relativeimport3/Makefile b/Examples/python/import_packages/relativeimport3/Makefile
index b9d803a0e..dd38f90bd 100644
--- a/Examples/python/import_packages/relativeimport3/Makefile
+++ b/Examples/python/import_packages/relativeimport3/Makefile
@@ -2,7 +2,6 @@ TOP        = ../../..
 SWIG       = $(realpath $(TOP)/../preinst-swig)
 SWIGOPT    =
 LIBS       =
-PY3        =
 
 ifeq (,$(PY3))
   PKG1DIR  = "py2"