diff --git a/config/config/src/main/java/io/helidon/config/ObjectNodeImpl.java b/config/config/src/main/java/io/helidon/config/ObjectNodeImpl.java
index ba245e01ecd..20108d9fdc3 100644
--- a/config/config/src/main/java/io/helidon/config/ObjectNodeImpl.java
+++ b/config/config/src/main/java/io/helidon/config/ObjectNodeImpl.java
@@ -116,19 +116,20 @@ public MergeableNode merge(MergeableNode node) {
     private static void addObjectNode(Builder parentBuilder, Config parent) {
         parent.asNodeList().ifPresent(it -> {
             for (Config child : it) {
+                String escapedName = Config.Key.escapeName(child.name());
                 switch (child.type()) {
                 case OBJECT -> {
                     Builder childBuilder = ObjectNode.builder();
                     addObjectNode(childBuilder, child);
-                    parentBuilder.addObject(child.name(), childBuilder.build());
+                    parentBuilder.addObject(escapedName, childBuilder.build());
                 }
                 case LIST -> {
                     ListNode.Builder childBuilder = ListNode.builder();
                     addListNode(childBuilder, child);
-                    parentBuilder.addList(child.name(), childBuilder.build());
+                    parentBuilder.addList(escapedName, childBuilder.build());
                 }
                 case VALUE -> {
-                    parentBuilder.addValue(child.name(), child.asString().get());
+                    parentBuilder.addValue(escapedName, child.asString().get());
                 }
                 default -> {
                     // do nothing
diff --git a/config/config/src/test/java/io/helidon/config/ConfigCopyTest.java b/config/config/src/test/java/io/helidon/config/ConfigCopyTest.java
index 6ae20079b28..9f4099638aa 100644
--- a/config/config/src/test/java/io/helidon/config/ConfigCopyTest.java
+++ b/config/config/src/test/java/io/helidon/config/ConfigCopyTest.java
@@ -72,4 +72,40 @@ void testCopyWithArray() {
         assertThat(copy.get("object.second").asString(), is(ConfigValues.simpleValue("secondValue")));
         assertThat(copy.get("aaa.0").asString(), is(ConfigValues.simpleValue("bbb")));
     }
+
+    @Test
+    void testDottedKey() {
+        var withDottedName = ConfigNode.ObjectNode.builder()
+                .addValue(Config.Key.escapeName("first.one"), "firstValue")
+                .addValue("second", "secondValue")
+                .build();
+
+        var rootNode = ConfigNode.ObjectNode.builder()
+                .addObject("object", withDottedName)
+                .build();
+
+        var originalConfig = Config.builder()
+                .disableSystemPropertiesSource()
+                .disableEnvironmentVariablesSource()
+                .addSource(io.helidon.config.ConfigSources.create(rootNode))
+                .build();
+
+        assertThat("Dotted name entry in original",
+                   originalConfig.get("object." + Config.Key.escapeName("first.one")).asString().get(),
+                   is("firstValue"));
+
+        var copyConfig = Config.builder()
+                .disableSystemPropertiesSource()
+                .disableEnvironmentVariablesSource()
+                .addSource(ConfigSources.create(originalConfig))
+                .build();
+
+        var firstOneConfigValue = copyConfig.get("object." + Config.Key.escapeName("first.one")).asString();
+        assertThat("Dotted name key in copy is present",
+                   firstOneConfigValue.isPresent(),
+                   is(true));
+        assertThat("Dotted name value in copy",
+                   firstOneConfigValue.get(),
+                   is("firstValue"));
+    }
 }