diff --git a/agentweb-core/src/main/java/com/just/agentweb/DefaultUIController.java b/agentweb-core/src/main/java/com/just/agentweb/DefaultUIController.java
index bbd2224d..a46e4276 100644
--- a/agentweb-core/src/main/java/com/just/agentweb/DefaultUIController.java
+++ b/agentweb-core/src/main/java/com/just/agentweb/DefaultUIController.java
@@ -367,6 +367,14 @@ public void onPermissionsDeny(String[] permissions, String permissionType, Strin
 
 	@Override
 	public void onShowSslCertificateErrorDialog(final WebView view, final SslErrorHandler handler, final SslError error) {
+		Activity mActivity;
+		if ((mActivity = this.mActivity) == null || mActivity.isFinishing()) {
+			// Issue #1065: Avoid BadTokenException when the host activity has
+			// already started finishing. Mirror the guard used by every other
+			// dialog method in this class (onLoading, onCancelLoading, ...).
+			handler.cancel();
+			return;
+		}
 		AlertDialog.Builder alertDialog = new AlertDialog.Builder(mActivity);
 		String sslErrorMessage;
 		switch (error.getPrimaryError()) {