1 files changed, 12 insertions, 0 deletions
diff --git a/theme-compiler/src/com/vaadin/sass/tree/MixinDefNode.java b/theme-compiler/src/com/vaadin/sass/tree/MixinDefNode.java
index 0cffbc3203..9f51a959b8 100644
--- a/theme-compiler/src/com/vaadin/sass/tree/MixinDefNode.java
+++ b/theme-compiler/src/com/vaadin/sass/tree/MixinDefNode.java
@@ -19,6 +19,7 @@ package com.vaadin.sass.tree;
 import java.util.ArrayList;
 import java.util.Collection;
 
+import com.vaadin.sass.ScssStylesheet;
 import com.vaadin.sass.util.DeepCopy;
 
 public class MixinDefNode extends Node implements IVariableNode {
@@ -73,4 +74,15 @@ public class MixinDefNode extends Node implements IVariableNode {
         }
     }
 
+    @Override
+    public void traverse() {
+        if (!arglist.isEmpty()) {
+            for (final VariableNode arg : arglist) {
+                if (arg.getExpr() != null) {
+                    ScssStylesheet.addVariable(arg);
+                }
+            }
+        }
+    }
+
 }