diff --git a/.appveyor.yml b/.appveyor.yml
index 8ad507e5..0ffa7323 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -82,23 +82,17 @@ init:
 
 
 # Repository gets cloned, Cache is restored
+
 install:
     - "%PYEXE% C:\\appveyor.py install"
 
+# PostgreSQL server starts now
+
 build: off
 
-#before_build:
-
 build_script:
-    # Add PostgreSQL binaries to the path
-    - PATH=C:\Program Files\PostgreSQL\9.6\bin\;%PATH%
-    - CD C:\Project
-    - "%PYTHON%\\python.exe setup.py build_ext --have-ssl --pg-config %PGTOP%\\bin\\pg_config.exe -l libpgcommon -l libpgport -L %OPENSSLTOP%\\lib -I %OPENSSLTOP%\\include"
-    - "%PYTHON%\\python.exe setup.py build"
-    - "%PYTHON%\\python.exe setup.py install"
-    - RD /S /Q psycopg2.egg-info
+    - "%PYEXE% C:\\appveyor.py build_script"
 
-#after_build:
 
 before_test:
     # Create and setup PostgreSQL database for the tests
diff --git a/scripts/appveyor.py b/scripts/appveyor.py
index 4ed758d0..896bfc9a 100755
--- a/scripts/appveyor.py
+++ b/scripts/appveyor.py
@@ -95,14 +95,11 @@ def setup_env():
 
 def python_info():
     logger.info("Python Information")
-    out = out_command([py_exe(), '--version'], stderr=sp.STDOUT)
-    logger.info("%s", out)
-
-    out = out_command(
+    run_command([py_exe(), '--version'], stderr=sp.STDOUT)
+    run_command(
         [py_exe(), '-c']
         + ["import sys; print('64bit: %s' % (sys.maxsize > 2**32))"]
     )
-    logger.info("%s", out)
 
 
 def step_init():
@@ -131,6 +128,10 @@ def step_install():
     build_libpq()
 
 
+def step_build_script():
+    build_psycopg()
+
+
 def build_openssl():
     top = os.path.join(base_dir(), 'openssl')
     if os.path.exists(os.path.join(top, 'lib', 'libssl.lib')):
@@ -284,6 +285,33 @@ $config->{openssl} = "%s";
     shutil.rmtree(os.path.join(pgbuild))
 
 
+def build_psycopg():
+    # Add PostgreSQL binaries to the path
+    setenv(
+        'PATH',
+        os.pathsep.join(
+            [r'C:\Program Files\PostgreSQL\9.6\bin', os.environ['PATH']]
+        ),
+    )
+    os.chdir(r"C:\Project")
+
+    # Find the pg_config just built
+    path = os.pathsep.join(
+        [os.path.join(base_dir(), r'postgresql\bin'), os.environ['PATH']]
+    )
+    setenv('PATH', path)
+
+    run_command(
+        [py_exe(), "setup.py", "build_ext", "--have-ssl"]
+        + ["-l", "libpgcommon", "-l", "libpgport"]
+        + ["-L", os.path.join(base_dir(), r'openssl\lib')]
+        + ['-I', os.path.join(base_dir(), r'openssl\include')]
+    )
+    run_command([py_exe(), "setup.py", "build_py"])
+    run_command([py_exe(), "setup.py", "install"])
+    shutil.rmtree("psycopg2.egg-info")
+
+
 def download(url, fn):
     """Download a file locally"""
     logger.info("downloading %s", url)