diff --git a/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java b/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
index 6744acb16d5474f76e7708ac93ad5e87d06a506d..c6a387122607028751ee4f2aa81a3e98609cd593 100644
--- a/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java
@@ -124,8 +124,10 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
 		mMoreDetails.setVisibility(View.GONE);
 		mInviteButton = (Button) findViewById(R.id.invite);
 		mInviteButton.setOnClickListener(inviteListener);
-		getActionBar().setHomeButtonEnabled(true);
-		getActionBar().setDisplayHomeAsUpEnabled(true);
+		if (getActionBar() != null) {
+			getActionBar().setHomeButtonEnabled(true);
+			getActionBar().setDisplayHomeAsUpEnabled(true);
+		}
 		mEditNickButton.setOnClickListener(new OnClickListener() {
 
 			@Override
@@ -364,6 +366,7 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
 		}
 	}
 
+	@SuppressWarnings("deprecation")
 	@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
 	private void setListItemBackgroundOnView(View view) {
 		int sdk = android.os.Build.VERSION.SDK_INT;
@@ -383,7 +386,7 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
 				try {
 					startIntentSenderForResult(intent.getIntentSender(), 0,
 							null, 0, 0, 0);
-				} catch (SendIntentException e) {
+				} catch (SendIntentException ignored) {
 
 				}
 			}
diff --git a/src/main/res/layout/account_row.xml b/src/main/res/layout/account_row.xml
index 2d1190a3a1e63e9f1e3a83303b422601a5ec3dd3..60b69090ff7831f10cd5c63173bfd8304515ed79 100644
--- a/src/main/res/layout/account_row.xml
+++ b/src/main/res/layout/account_row.xml
@@ -10,7 +10,8 @@
         android:layout_width="48dp"
         android:layout_height="48dp"
         android:layout_alignParentLeft="true"
-        android:src="@drawable/ic_profile" >
+        android:src="@drawable/ic_profile"
+        android:contentDescription="@string/account_image_description">
     </ImageView>
 
     <LinearLayout
diff --git a/src/main/res/layout/activity_edit_account.xml b/src/main/res/layout/activity_edit_account.xml
index fa39ed5ec6fd9571667d39598b432c9259514aa1..ed83cb9a2e984e0e2a2aba5d2911d7726d8cbdd3 100644
--- a/src/main/res/layout/activity_edit_account.xml
+++ b/src/main/res/layout/activity_edit_account.xml
@@ -27,7 +27,8 @@
                     android:layout_width="72dp"
                     android:layout_height="72dp"
                     android:layout_alignParentTop="true"
-                    android:layout_marginRight="16dp"/>
+                    android:layout_marginRight="16dp"
+                    android:contentDescription="@string/account_image_description"/>
                 <LinearLayout
                     android:layout_width="fill_parent"
                     android:layout_height="wrap_content"
@@ -236,7 +237,8 @@
                         android:background="?android:selectableItemBackground"
                         android:padding="8dp"
                         android:src="@drawable/ic_action_copy"
-                        android:visibility="visible" />
+                        android:visibility="visible"
+                        android:contentDescription="@string/copy_otr_clipboard_description"/>
                 </RelativeLayout>
 
                
diff --git a/src/main/res/values/strings.xml b/src/main/res/values/strings.xml
index 7e235f6830f944b2da9db01c64b3ca72e5fb796b..6b639452099f28232662ea24baf6616b7ee6f9d3 100644
--- a/src/main/res/values/strings.xml
+++ b/src/main/res/values/strings.xml
@@ -358,4 +358,6 @@
     <string name="conference_created">Conference created!</string>
     <string name="secret_accepted">Secret accepted!</string>
     <string name="reset">Reset</string>
+    <string name="account_image_description">Account avatar</string>
+    <string name="copy_otr_clipboard_description">Copy OTR fingerprint to clipboard</string>
 </resources>