diff --git a/Modules/pyexpat.c b/Modules/pyexpat.c
index 2b4d312..408756e 100644
--- a/Modules/pyexpat.c
+++ b/Modules/pyexpat.c
@@ -2,7 +2,7 @@
 #include <ctype.h>
 
 #include "frameobject.h"
-#include "expat.h"
+#include <expat.h>
 
 #include "pyexpat.h"
 
diff --git a/setup.py b/setup.py
index 6cfb43f..142aa5d 100644
--- a/setup.py
+++ b/setup.py
@@ -1491,10 +1491,6 @@ class PyBuildExt(build_ext):
         else:
             expat_inc = [os.path.join(os.getcwd(), srcdir, 'Modules', 'expat')]
             define_macros = [
-                ('HAVE_EXPAT_CONFIG_H', '1'),
-                # bpo-30947: Python uses best available entropy sources to
-                # call XML_SetHashSalt(), expat entropy sources are not needed
-                ('XML_POOR_ENTROPY', '1'),
             ]
             expat_lib = []
             expat_sources = ['expat/xmlparse.c',
@@ -1514,10 +1510,8 @@ class PyBuildExt(build_ext):
                              ]
 
         exts.append(Extension('pyexpat',
-                              define_macros = define_macros,
-                              include_dirs = expat_inc,
-                              libraries = expat_lib,
-                              sources = ['pyexpat.c'] + expat_sources,
+                              sources = ['pyexpat.c'],
+                              libraries = ['expat'],
                               depends = expat_depends,
                               ))