diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/tests/SampleActivity.java b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/tests/SampleActivity.java
index ddc6b36..6e0ecc9 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/tests/SampleActivity.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/tests/SampleActivity.java
@@ -21,7 +21,7 @@
         Fragment fragment;
 
         if(view == findViewById(R.id.button)){
-            fragment = new RealTime3DFragment();
+            fragment = new StartFragment();
             getSupportFragmentManager()
                     .beginTransaction()
                     .replace(R.id.fragment_field, fragment)
@@ -29,7 +29,7 @@
         }
 
         if(view == findViewById(R.id.button2)){
-            fragment = new StartFragment();
+            fragment = new RealTime3DFragment();
             getSupportFragmentManager()
                     .beginTransaction()
                     .replace(R.id.fragment_field, fragment)