diff --git a/test/tests/LanguagePackTest.cpp b/test/tests/LanguagePackTest.cpp
index 6d6e0263c2..355f881746 100644
--- a/test/tests/LanguagePackTest.cpp
+++ b/test/tests/LanguagePackTest.cpp
@@ -1,4 +1,5 @@
 #include "localisation/LanguagePack.h"
+#include "localisation/string_ids.h"
 #include <gtest/gtest.h>
 
 TEST(LanguagePackTest, create_empty)
@@ -34,6 +35,10 @@ TEST(LanguagePackTest, language_pack_simple)
     ASSERT_STREQ(lang->GetString(0x7000), "Arid Heights scenario string");
     ASSERT_EQ(lang->GetObjectOverrideStringId("CONDORRD", 0), 0x6000);
     ASSERT_STREQ(lang->GetString(0x6000), "my test ride");
+    // Test some negatives too
+    ASSERT_EQ(lang->GetString(1000), nullptr);
+    ASSERT_EQ(lang->GetScenarioOverrideStringId("No such park", 0), STR_NONE);
+    ASSERT_EQ(lang->GetObjectOverrideStringId("        ", 0), STR_NONE);
     delete lang;
 }
 
@@ -98,4 +103,4 @@ const unsigned char LanguageZhTW[] = {
     0xe8, 0x88, 0xac, 0xe7, 0x9a, 0x84, 0xe5, 0xbf, 0xab, 0xe6, 0x84, 0x9f, 0x0a, 0x53, 0x54, 0x52, 0x5f, 0x43, 0x50, 0x54,
     0x59, 0x20, 0x20, 0x20, 0x20, 0x3a, 0xe6, 0xaf, 0x8f, 0xe8, 0xbb, 0x8a, 0xe5, 0x8d, 0xa1, 0x34, 0xe4, 0xbd, 0x8d, 0xe4,
     0xb9, 0x98, 0xe5, 0xae, 0xa2, 0x0a, 0x00
-};
\ No newline at end of file
+};