diff --git a/core/src/main/java/org/testcontainers/utility/TestcontainersConfiguration.java b/core/src/main/java/org/testcontainers/utility/TestcontainersConfiguration.java
index fddeec9c9b7..fd189a0ad59 100644
--- a/core/src/main/java/org/testcontainers/utility/TestcontainersConfiguration.java
+++ b/core/src/main/java/org/testcontainers/utility/TestcontainersConfiguration.java
@@ -306,8 +306,6 @@ public boolean updateUserConfig(@NonNull String prop, @NonNull String value) {
                 return false;
             }
 
-            userProperties.setProperty(prop, value);
-
             USER_CONFIG_FILE.createNewFile();
             try (OutputStream outputStream = new FileOutputStream(USER_CONFIG_FILE)) {
                 userProperties.store(outputStream, "Modified by Testcontainers");