diff --git a/lang/en/texts.php b/lang/en/texts.php
index 7ef2c72c0b47..287bd744db67 100644
--- a/lang/en/texts.php
+++ b/lang/en/texts.php
@@ -1933,6 +1933,7 @@ $lang = array(
     'require_quote_signature_help' => 'Require client to provide their signature.',
     'i_agree' => 'I Agree To The Terms',
     'sign_here' => 'Please sign here:',
+    'sign_here_ux_tip' => 'Use the mouse or your touchpad to trace your signature in the panel below:',
     'authorization' => 'Authorization',
     'signed' => 'Signed',
 
diff --git a/lang/en_GB/texts.php b/lang/en_GB/texts.php
index 9c213a0ae88d..c3897d207738 100644
--- a/lang/en_GB/texts.php
+++ b/lang/en_GB/texts.php
@@ -1947,6 +1947,7 @@ $lang = [
     'require_quote_signature_help' => 'Require client to provide their signature.',
     'i_agree' => 'I Agree To The Terms',
     'sign_here' => 'Please sign here:',
+    'sign_here_ux_tip' => 'Use the mouse or your touchpad to trace your signature in the panel below:',
     'authorization' => 'Authorisation',
     'signed' => 'Signed',
 
diff --git a/resources/views/portal/ninja2020/invoices/includes/signature.blade.php b/resources/views/portal/ninja2020/invoices/includes/signature.blade.php
index 5464b607502e..e0b7b7b73577 100644
--- a/resources/views/portal/ninja2020/invoices/includes/signature.blade.php
+++ b/resources/views/portal/ninja2020/invoices/includes/signature.blade.php
@@ -14,6 +14,9 @@
                 <h3 class="text-lg leading-6 font-medium text-gray-900">
                     {{ ctrans('texts.sign_here') }}
                 </h3>
+                <h4>
+                    {{ ctrans('texts.sign_here_ux_tip') }}
+                </h4>
                 <div class="mt-2">
                     <p class="text-sm leading-5 text-gray-500">
                         <canvas id="signature-pad" class="signature-pad border rounded" width=400 height=200></canvas>