diff --git a/backend/api.test/Controllers/MissionDefinitionControllerTests.cs b/backend/api.test/Controllers/MissionDefinitionControllerTests.cs
index 2027800a..2ce0ae30 100644
--- a/backend/api.test/Controllers/MissionDefinitionControllerTests.cs
+++ b/backend/api.test/Controllers/MissionDefinitionControllerTests.cs
@@ -80,5 +80,17 @@ public async Task CheckThatListAllMissionDefinitionsEndpointReturnsSuccess()
 
             Assert.Single(missionDefinitions!);
         }
+
+        [Fact]
+        public async Task CheckThatListAllMissionDefinitionsSucceedWhenThereAreNoMissionDefinitions()
+        {
+            var response = await Client.GetAsync("missions/definitions");
+
+            var missionDefinitions = await response.Content.ReadFromJsonAsync<
+                List<MissionDefinitionResponse>
+            >(SerializerOptions);
+
+            Assert.Empty(missionDefinitions!);
+        }
     }
 }