diff --git a/test/util/bitcoin-util-test.py b/test/util/bitcoin-util-test.py
index 16371a6234..92fef30e13 100755
--- a/test/util/bitcoin-util-test.py
+++ b/test/util/bitcoin-util-test.py
@@ -28,7 +28,7 @@ import sys
 def main():
     config = configparser.ConfigParser()
     config.optionxform = str
-    config.readfp(open(os.path.join(os.path.dirname(__file__), "../config.ini"), encoding="utf8"))
+    config.read_file(open(os.path.join(os.path.dirname(__file__), "../config.ini"), encoding="utf8"))
     env_conf = dict(config.items('environment'))
 
     parser = argparse.ArgumentParser(description=__doc__)