diff --git a/lib/ansible/modules/system/interfaces_file.py b/lib/ansible/modules/system/interfaces_file.py
index 73660832d71..d062b735c70 100755
--- a/lib/ansible/modules/system/interfaces_file.py
+++ b/lib/ansible/modules/system/interfaces_file.py
@@ -302,6 +302,14 @@ def setInterfaceOption(module, lines, iface, option, raw_value, state):
 
 
 def addOptionAfterLine(option, value, iface, lines, last_line_dict, iface_options):
+    # Changing method of interface is not an addition
+    if option == 'method':
+        for ln in lines:
+            if ln.get('line_type', '') == 'iface':
+                ln['line'] = re.sub(ln.get('params', {}).get('method', '') + '$', value, ln.get('line'))
+                ln['params']['method'] = value
+        return lines
+
     last_line = last_line_dict['line']
     prefix_start = last_line.find(last_line.split()[0])
     suffix_start = last_line.rfind(last_line.split()[-1]) + len(last_line.split()[-1])