diff --git a/cara/apps/calculator/templates/base/calculator.report.html.j2 b/cara/apps/calculator/templates/base/calculator.report.html.j2
index 2e2930ac..705ee449 100644
--- a/cara/apps/calculator/templates/base/calculator.report.html.j2
+++ b/cara/apps/calculator/templates/base/calculator.report.html.j2
@@ -2,7 +2,7 @@
 <html lang="en">
 <head>
 	<meta charset="UTF-8">
-	<meta name="viewport" content="width=device-width, initial-scale=1">
+	<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1.0">
 
   	<title>Report | CARA (COVID Airborne Risk Assessment)</title>
 
diff --git a/cara/apps/templates/layout.html.j2 b/cara/apps/templates/layout.html.j2
index 131c5497..555e81b3 100644
--- a/cara/apps/templates/layout.html.j2
+++ b/cara/apps/templates/layout.html.j2
@@ -3,7 +3,7 @@
 
 <head>
   <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, viewport-fit=cover">
   <meta http-equiv="X-UA-Compatible" content="ie=edge">
 
   <title>
