diff --git a/src/mode/java.js b/src/mode/java.js
index 0ef16d4924..fcd44ab81b 100644
--- a/src/mode/java.js
+++ b/src/mode/java.js
@@ -9,6 +9,7 @@ var Mode = function() {
     JavaScriptMode.call(this);
     this.HighlightRules = JavaHighlightRules;
     this.foldingRules = new JavaFoldMode();
+    this.$behaviour = this.$defaultBehaviour;
 };
 oop.inherits(Mode, JavaScriptMode);
 
diff --git a/src/mode/scala.js b/src/mode/scala.js
index 55a2b3842f..be96ceecdc 100644
--- a/src/mode/scala.js
+++ b/src/mode/scala.js
@@ -7,6 +7,7 @@ var ScalaHighlightRules = require("./scala_highlight_rules").ScalaHighlightRules
 var Mode = function() {
     JavaScriptMode.call(this);
     this.HighlightRules = ScalaHighlightRules;
+    this.$behaviour = this.$defaultBehaviour;
 };
 oop.inherits(Mode, JavaScriptMode);
 
diff --git a/src/mode/wollok.js b/src/mode/wollok.js
index 905e30980a..4bce1ee3e2 100644
--- a/src/mode/wollok.js
+++ b/src/mode/wollok.js
@@ -7,6 +7,7 @@ var WollokHighlightRules = require("./wollok_highlight_rules").WollokHighlightRu
 var Mode = function() {
     JavaScriptMode.call(this);
     this.HighlightRules = WollokHighlightRules;
+    this.$behaviour = this.$defaultBehaviour;
 };
 oop.inherits(Mode, JavaScriptMode);