diff --git a/jasypt-maven-plugin/src/main/java/com/ulisesbocchio/jasyptmavenplugin/mojo/EncryptMojo.java b/jasypt-maven-plugin/src/main/java/com/ulisesbocchio/jasyptmavenplugin/mojo/EncryptMojo.java
index 28f353f..2ba5385 100644
--- a/jasypt-maven-plugin/src/main/java/com/ulisesbocchio/jasyptmavenplugin/mojo/EncryptMojo.java
+++ b/jasypt-maven-plugin/src/main/java/com/ulisesbocchio/jasyptmavenplugin/mojo/EncryptMojo.java
@@ -27,6 +27,10 @@ protected void run(final EncryptionService service, final Path path, String encr
         try {
             String contents = FileService.read(path);
             String encryptedContents = service.encrypt(contents, encryptPrefix, encryptSuffix, decryptPrefix, decryptSuffix);
+            if (contents.equals(encryptedContents)) {
+                LOGGER.warn("Encrypting file:{} not changed!", path);
+                return;
+            }
             FileService.write(path, encryptedContents);
 
         } catch (Exception e) {