diff --git a/app/Services/ImportService.php b/app/Services/ImportService.php
index d49007e2..51f3bfb6 100644
--- a/app/Services/ImportService.php
+++ b/app/Services/ImportService.php
@@ -117,7 +117,8 @@ class ImportService extends Service
 
             // turn it into a collection and run some filtering
             $row = collect($row)->map(function ($val, $index) {
-                return trim($val);
+                $val = trim($val);
+                return empty($val) ? null : $val;
             })->toArray();
 
             // Try to validate
diff --git a/tests/ImporterTest.php b/tests/ImporterTest.php
index 6484668f..e1c6fe5c 100644
--- a/tests/ImporterTest.php
+++ b/tests/ImporterTest.php
@@ -652,8 +652,8 @@ class ImporterTest extends TestCase
         $this->assertEquals(true, $airport->hub);
         $this->assertEquals('30.1945', $airport->lat);
         $this->assertEquals('-97.6699', $airport->lon);
-        $this->assertEquals(0.0, $airport->ground_handling_cost);
-        $this->assertEquals(setting('airports.default_jet_a_fuel_cost'), $airport->fuel_jeta_cost);
+        $this->assertEquals(250, $airport->ground_handling_cost);
+        $this->assertEquals(0.8, $airport->fuel_jeta_cost); // should be updated
 
         // See if it imported
         $airport = Airport::where([
diff --git a/tests/data/airports.csv b/tests/data/airports.csv
index 4990410f..135b797a 100644
--- a/tests/data/airports.csv
+++ b/tests/data/airports.csv
@@ -1,4 +1,4 @@
-icao,iata,name,location,country,timezone,hub,lat,lon,ground_handling_cost,fuel_100ll_cost,fuel_jeta_cost,fuel_mogas_cost
-KAUS,AUS,Austin-Bergstrom,"Austin, Texas, USA", United States,America/Chicago,1,30.1945,-97.6699,0,,,
-KSFO,SFO,San Francisco,"San Francisco, California, USA", United States,America/California,1,30.1945,-97.6699,,,0.9,
-KJFK,JFK,Kennedy,"Queens, New York, USA", United States,America/New_York,0,30.1945,abcd,150,,0.8,
+icao,iata,name,location,country,timezone,hub,lat,lon,ground_handling_cost,fuel_100ll_cost,fuel_jeta_cost,fuel_mogas_cost
+KAUS,AUS,Austin-Bergstrom,"Austin, Texas, USA", United States,America/Chicago,1,30.1945,-97.6699,250,0.8,0.8,0.8
+KSFO,SFO,San Francisco,"San Francisco, California, USA", United States,America/California,1,30.1945,-97.6699,,,0.9,
+KJFK,JFK,Kennedy,"Queens, New York, USA", United States,America/New_York,0,30.1945,abcd,150,,0.8,