diff --git a/db.php b/db.php
index edfd8ae..18f46dd 100644
--- a/db.php
+++ b/db.php
@@ -132,12 +132,21 @@ $stmt = $pdo->prepare("
             ]);
 
             if ($qid == "QID68"){
+                if ($value === 'null' || is_null($value)) {
+                    $value = 0;
+                }
                 updateResponseQ1($pdo, $value, $responseId);
             }
            if ($qid == "QID69"){
+                if ($value === 'null' || is_null($value)) {
+                    $value = 0;
+                }
                 updateResponseQ2($pdo, $value, $responseId);
             }
             if ($qid == "QID70"){
+                if ($value === 'null' || is_null($value)) {
+                    $value = 0;
+                }
                 updateResponseQ3($pdo, $value, $responseId);
             }