diff --git a/.gitignore b/.gitignore
index 3c1ebaa983..8fa229eab2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -82,6 +82,7 @@ gcov.log
 /bindings/python/libredwg.py
 /bindings/python/Makefile3.6
 /bindings/python/swig_python.c
+/bindings/python/swig_python.c.orig
 /build-aux/compile
 /build-aux/config.guess
 /build-aux/config.sub
diff --git a/bindings/python/Makefile.am b/bindings/python/Makefile.am
index 9db37012e9..93bc583283 100644
--- a/bindings/python/Makefile.am
+++ b/bindings/python/Makefile.am
@@ -56,7 +56,7 @@ if HAVE_PATCH
 swig_python.c : $(SWIG_SOURCES) Makefile.am
 	swig -python -I$(top_srcdir)/include -o swig_python.c $(srcdir)/../dwg.i
 	-$(PATCH) -t --dry-run -N -p2 -i $(SWIG_PYTHON_PATCH) && \
-	  $(PATCH) -t -N -p2 -i $(SWIG_PYTHON_PATCH)
+	  $(PATCH) -t -N -p2 -b -i $(SWIG_PYTHON_PATCH)
 CLEANFILES = swig_python.c.orig
 else
 swig_python.c : $(SWIG_SOURCES) Makefile.am
diff --git a/build-aux/swig_python.patch b/build-aux/swig_python.patch
index 492db52e9b..8e33360fe9 100644
--- a/build-aux/swig_python.patch
+++ b/build-aux/swig_python.patch
@@ -1,8 +1,8 @@
 difforig bindings/python/swig_python.c
 
 diff -u bindings/python/swig_python.c.orig bindings/python/swig_python.c
---- bindings/python/swig_python.c.orig	2018-07-10 17:19:22.000000000 +0200
-+++ bindings/python/swig_python.c	2018-07-10 17:19:23.000000000 +0200
+--- bindings/python/swig_python.c.orig	2018-07-25 12:13:08.000000000 +0200
++++ bindings/python/swig_python.c	2018-07-25 12:13:14.000000000 +0200
 @@ -2480,7 +2480,7 @@
  */
  
@@ -83,7 +83,7 @@ diff -u bindings/python/swig_python.c.orig bindings/python/swig_python.c
   Py_DECREF(dict);
  } 
  
-@@ -192076,6 +192076,17 @@
+@@ -205945,6 +205945,17 @@
  #ifdef __cplusplus
  extern "C"
  #endif