diff --git a/README.md b/README.md
index 9c52120..815f542 100644
--- a/README.md
+++ b/README.md
@@ -224,10 +224,15 @@ implemented:
  * Ctrl+Shift+E – View mode
  * Ctrl+F – Search
  * Ctrl+Shift+F – Close search
+ * Ctrl+G – Go to
  * Ctrl+N – New file
  * Ctrl+O – Open file
  * Ctrl+S – Save file
  * Ctrl+Shift+S – Save as
+ * Ctrl++ – Increase text size
+ * Ctrl+- – Decrease text size
+ * F3 – Find next
+ * F10 – Show menu
 
 ### SD cards
 Android allows removable SD cards to be used like a USB stick or as
diff --git a/src/main/java/org/billthefarmer/editor/Editor.java b/src/main/java/org/billthefarmer/editor/Editor.java
index 0be5dde..14efef9 100644
--- a/src/main/java/org/billthefarmer/editor/Editor.java
+++ b/src/main/java/org/billthefarmer/editor/Editor.java
@@ -1234,13 +1234,14 @@ public boolean onKeyDown(int keyCode, KeyEvent event)
                 break;
                 // Increase text size
             case KeyEvent.KEYCODE_PLUS:
+            case KeyEvent.KEYCODE_EQUALS:
                 size += 2;
                 size = Math.max(TINY, Math.min(size, HUGE));
                 textView.setTextSize(size);
                 break;
                 // Decrease text size
             case KeyEvent.KEYCODE_MINUS:
-                size += 2;
+                size -= 2;
                 size = Math.max(TINY, Math.min(size, HUGE));
                 textView.setTextSize(size);
                 break;
@@ -1265,10 +1266,14 @@ public boolean onKeyDown(int keyCode, KeyEvent event)
                 // Menu
             case KeyEvent.KEYCODE_F10:
                 openOptionsMenu();
+                break;
+
+            default:
+                return super.onKeyDown(keyCode, event);
             }
-        }
 
-        return super.onKeyDown(keyCode, event);
+            return true;
+        }
     }
 
     // editClicked