diff --git a/mobile/android/base/GeckoAppShell.java b/mobile/android/base/GeckoAppShell.java
index dac08933803..a48854fa3a5 100644
--- a/mobile/android/base/GeckoAppShell.java
+++ b/mobile/android/base/GeckoAppShell.java
@@ -497,8 +497,10 @@ public class GeckoAppShell
 
     public static void notifyIMEEnabled(int state, String typeHint,
                                         String actionHint, boolean landscapeFS) {
+        // notifyIMEEnabled() still needs the landscapeFS parameter because it is called from JNI
+        // code that assumes it has the same signature as XUL Fennec's (which does use landscapeFS).
         if (mInputConnection != null)
-            mInputConnection.notifyIMEEnabled(state, typeHint, actionHint, landscapeFS);
+            mInputConnection.notifyIMEEnabled(state, typeHint, actionHint);
     }
 
     public static void notifyIMEChange(String text, int start, int end, int newEnd) {
diff --git a/mobile/android/base/GeckoInputConnection.java b/mobile/android/base/GeckoInputConnection.java
index bfff2f62d22..54ae84e6f72 100644
--- a/mobile/android/base/GeckoInputConnection.java
+++ b/mobile/android/base/GeckoInputConnection.java
@@ -95,7 +95,6 @@ public class GeckoInputConnection
     private static int mIMEState;
     private static String mIMETypeHint;
     private static String mIMEActionHint;
-    private static boolean mIMELandscapeFS;
 
     // Is a composition active?
     private boolean mComposing;
@@ -748,8 +747,8 @@ public class GeckoInputConnection
         else if (mIMEActionHint != null && mIMEActionHint.length() != 0)
             outAttrs.actionLabel = mIMEActionHint;
 
-        if (mIMELandscapeFS == false)
-            outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_EXTRACT_UI;
+        outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_EXTRACT_UI
+                               | EditorInfo.IME_FLAG_NO_FULLSCREEN;
 
         reset();
         return this;
@@ -931,8 +930,7 @@ public class GeckoInputConnection
         }
     }
 
-    public void notifyIMEEnabled(int state, String typeHint,
-                                 String actionHint, boolean landscapeFS) {
+    public void notifyIMEEnabled(int state, String typeHint, String actionHint) {
         View v = GeckoApp.mAppContext.getLayerController().getView();
 
         if (v == null)
@@ -943,7 +941,6 @@ public class GeckoInputConnection
         mIMEState = state;
         mIMETypeHint = typeHint;
         mIMEActionHint = actionHint;
-        mIMELandscapeFS = landscapeFS;
         IMEStateUpdater.enableIME();
     }