diff --git a/arduino-core/src/cc/arduino/Compiler.java b/arduino-core/src/cc/arduino/Compiler.java
index 53a038abb..a3aa83357 100644
--- a/arduino-core/src/cc/arduino/Compiler.java
+++ b/arduino-core/src/cc/arduino/Compiler.java
@@ -306,6 +306,8 @@ public class Compiler implements MessageConsumer {
       cmd.add("-verbose");
     }
 
+    cmd.add("-experimental");
+
     cmd.add(pathToSketch.getAbsolutePath());
 
     if (verbose) {
diff --git a/arduino-core/src/cc/arduino/builder/ArduinoBuilder.java b/arduino-core/src/cc/arduino/builder/ArduinoBuilder.java
index bfbbb7b2b..3c66528be 100644
--- a/arduino-core/src/cc/arduino/builder/ArduinoBuilder.java
+++ b/arduino-core/src/cc/arduino/builder/ArduinoBuilder.java
@@ -33,6 +33,7 @@ public class ArduinoBuilder {
     List<String> cmd = new ArrayList<>();
     cmd.add(BaseNoGui.getContentFile("arduino-builder").getAbsolutePath());
     cmd.add("-daemon");
+    cmd.add("-experimental");
     builder = ProcessUtils.exec(cmd.toArray(new String[0]));
     builderOut = new MessageSiphon(builder.getInputStream(), (msg) -> {
       System.out.println(msg);