diff --git a/app/Import/Storage/ImportArrayStorage.php b/app/Import/Storage/ImportArrayStorage.php
index b475b67bb6..76e2605347 100644
--- a/app/Import/Storage/ImportArrayStorage.php
+++ b/app/Import/Storage/ImportArrayStorage.php
@@ -190,7 +190,7 @@ class ImportArrayStorage
      */
     private function getHash(array $transaction): string
     {
-        unset($transaction['importHashV2']);
+        unset($transaction['importHashV2'], $transaction['original-source']);
         $json = json_encode($transaction);
         if (false === $json) {
             /** @noinspection ForgottenDebugOutputInspection */
diff --git a/tests/Unit/Support/Import/Routine/Spectre/StageImportDataHandlerTest.php b/tests/Unit/Support/Import/Routine/Spectre/StageImportDataHandlerTest.php
index a7ec36c8c8..82d11562fd 100644
--- a/tests/Unit/Support/Import/Routine/Spectre/StageImportDataHandlerTest.php
+++ b/tests/Unit/Support/Import/Routine/Spectre/StageImportDataHandlerTest.php
@@ -360,7 +360,7 @@ class StageImportDataHandlerTest extends TestCase
                 'piggy_bank_name' => null,
                 'bill_id'         => null,
                 'bill_name'       => null,
-                'original-source'    => sprintf('spectre-v%s', config('firefly.version')),
+                'original-source' => sprintf('spectre-v%s', config('firefly.version')),
 
                 // transaction data:
                 'transactions'    => [
@@ -398,7 +398,7 @@ class StageImportDataHandlerTest extends TestCase
                 'piggy_bank_name' => null,
                 'bill_id'         => null,
                 'bill_name'       => null,
-                'original-source'    => sprintf('spectre-v%s', config('firefly.version')),
+                'original-source' => sprintf('spectre-v%s', config('firefly.version')),
 
                 // transaction data:
                 'transactions'    => [
@@ -558,7 +558,7 @@ class StageImportDataHandlerTest extends TestCase
                 'piggy_bank_name' => null,
                 'bill_id'         => null,
                 'bill_name'       => null,
-                'original-source'    => sprintf('spectre-v%s', config('firefly.version')),
+                'original-source' => sprintf('spectre-v%s', config('firefly.version')),
 
                 // transaction data:
                 'transactions'    => [
@@ -596,7 +596,7 @@ class StageImportDataHandlerTest extends TestCase
                 'piggy_bank_name' => null,
                 'bill_id'         => null,
                 'bill_name'       => null,
-                'original-source'    => sprintf('spectre-v%s', config('firefly.version')),
+                'original-source' => sprintf('spectre-v%s', config('firefly.version')),
 
                 // transaction data:
                 'transactions'    => [