diff --git a/implementation/src/main/java/io/smallrye/config/SmallRyeConfigBuilder.java b/implementation/src/main/java/io/smallrye/config/SmallRyeConfigBuilder.java
index f2a709c89..1215d7b5c 100644
--- a/implementation/src/main/java/io/smallrye/config/SmallRyeConfigBuilder.java
+++ b/implementation/src/main/java/io/smallrye/config/SmallRyeConfigBuilder.java
@@ -186,7 +186,7 @@ public SmallRyeConfigBuilder addDefaultSources() {
         return this;
     }
 
-    List<ConfigSource> getDefaultSources() {
+    protected List<ConfigSource> getDefaultSources() {
         List<ConfigSource> defaultSources = new ArrayList<>();
 
         defaultSources.add(new EnvConfigSource());