diff --git a/src/org/linphone/AboutFragment.java b/src/org/linphone/AboutFragment.java
index a2501193a..77a5f516f 100644
--- a/src/org/linphone/AboutFragment.java
+++ b/src/org/linphone/AboutFragment.java
@@ -93,7 +93,7 @@ public class AboutFragment extends Fragment implements OnClickListener {
 					lc.resetLogCollection();
 				}
 			} else if (v == cancel) {
-				LinphoneActivity.instance().displayDialer();
+				getFragmentManager().popBackStackImmediate();
 			}
 		}
 	}
diff --git a/src/org/linphone/ContactDetailsFragment.java b/src/org/linphone/ContactDetailsFragment.java
index 8146b3be6..7909e0f1e 100644
--- a/src/org/linphone/ContactDetailsFragment.java
+++ b/src/org/linphone/ContactDetailsFragment.java
@@ -253,7 +253,7 @@ public class ContactDetailsFragment extends Fragment implements OnClickListener
 			dialog.show();
 		}
 		if (id == R.id.back) {
-			LinphoneActivity.instance().displayContacts(false);
+			getFragmentManager().popBackStackImmediate();
 		}
 	}
 }