diff --git a/src/Model/Contact.php b/src/Model/Contact.php
index 873de0890..79ddae713 100644
--- a/src/Model/Contact.php
+++ b/src/Model/Contact.php
@@ -1395,9 +1395,17 @@ class Contact
 		}
 
 		if ($data['network'] == Protocol::DIASPORA) {
-			DI::dsprContact()->updateFromProbeArray($data);
+			try {
+				DI::dsprContact()->updateFromProbeArray($data);
+			} catch (\InvalidArgumentException $e) {
+				Logger::error($e->getMessage(), ['url' => $url, 'data' => $data]);
+			}
 		} elseif (!empty($data['networks'][Protocol::DIASPORA])) {
-			DI::dsprContact()->updateFromProbeArray($data['networks'][Protocol::DIASPORA]);
+			try {
+				DI::dsprContact()->updateFromProbeArray($data['networks'][Protocol::DIASPORA]);
+			} catch (\InvalidArgumentException $e) {
+				Logger::error($e->getMessage(), ['url' => $url, 'data' => $data['networks'][Protocol::DIASPORA]]);
+			}
 		}
 
 		self::updateFromProbeArray($contact_id, $data);
@@ -2485,15 +2493,23 @@ class Contact
 			return false;
 		}
 
-		$ret = Probe::uri($contact['url'], $network, $contact['uid']);
+		$data = Probe::uri($contact['url'], $network, $contact['uid']);
 
-		if ($ret['network'] == Protocol::DIASPORA) {
-			DI::dsprContact()->updateFromProbeArray($ret);
-		} elseif (!empty($ret['networks'][Protocol::DIASPORA])) {
-			DI::dsprContact()->updateFromProbeArray($ret['networks'][Protocol::DIASPORA]);
+		if ($data['network'] == Protocol::DIASPORA) {
+			try {
+				DI::dsprContact()->updateFromProbeArray($data);
+			} catch (\InvalidArgumentException $e) {
+				Logger::error($e->getMessage(), ['id' => $id, 'network' => $network, 'contact' => $contact, 'data' => $data]);
+			}
+		} elseif (!empty($data['networks'][Protocol::DIASPORA])) {
+			try {
+				DI::dsprContact()->updateFromProbeArray($data['networks'][Protocol::DIASPORA]);
+			} catch (\InvalidArgumentException $e) {
+				Logger::error($e->getMessage(), ['id' => $id, 'network' => $network, 'contact' => $contact, 'data' => $data]);
+			}
 		}
 
-		return self::updateFromProbeArray($id, $ret);
+		return self::updateFromProbeArray($id, $data);
 	}
 
 	/**
diff --git a/src/Protocol/Diaspora/Repository/DiasporaContact.php b/src/Protocol/Diaspora/Repository/DiasporaContact.php
index ac8d200aa..1669707b9 100644
--- a/src/Protocol/Diaspora/Repository/DiasporaContact.php
+++ b/src/Protocol/Diaspora/Repository/DiasporaContact.php
@@ -234,6 +234,18 @@ class DiasporaContact extends BaseRepository
 	 */
 	public function updateFromProbeArray(array $data): Entity\DiasporaContact
 	{
+		if (empty($data['url'])) {
+			throw new \InvalidArgumentException('Missing url key in Diaspora probe data array');
+		}
+
+		if (empty($data['guid'])) {
+			throw new \InvalidArgumentException('Missing guid key in Diaspora probe data array');
+		}
+
+		if (empty($data['pubkey'])) {
+			throw new \InvalidArgumentException('Missing pubkey key in Diaspora probe data array');
+		}
+
 		$uriId = ItemURI::insert(['uri' => $data['url'], 'guid' => $data['guid']]);
 
 		$contact   = Contact::getByUriId($uriId, ['id', 'created']);