diff --git a/eel/eel-string.c b/eel/eel-string.c
index d7e31988e..1fa480c24 100644
--- a/eel/eel-string.c
+++ b/eel/eel-string.c
@@ -479,39 +479,39 @@ eel_self_check_string (void)
     EEL_CHECK_STRING_RESULT (eel_str_capitalize ("foo"), "Foo");
     EEL_CHECK_STRING_RESULT (eel_str_capitalize ("Foo"), "Foo");
 
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 0), "foo");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 0), NULL);
     EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 1), "foo");
     EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 3), "foo");
     EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 4), "foo");
     EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 5), "foo");
     EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 6), "foo");
     EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("foo", 7), "foo");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 0), "a_much_longer_foo");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 0), NULL);
     EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 1), "a_much_longer_foo");
     EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 2), "a_much_longer_foo");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 3), "a_much_longer_foo");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 4), "a_much_longer_foo");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 5), "a…o");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 6), "a…oo");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 7), "a_…oo");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 8), "a_…foo");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 9), "a_m…foo");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 8), "so…ven");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 8), "so…odd");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 9), "som…ven");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 9), "som…odd");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 10), "som…even");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 10), "som…_odd");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 11), "some…even");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 11), "some…_odd");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 12), "some…_even");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 12), "some…g_odd");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 13), "somet…_even");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 3), "a…o");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 4), "a…oo");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 5), "a_…oo");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 6), "a_…foo");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 7), "a_m…foo");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 8), "a_m…_foo");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("a_much_longer_foo", 9), "a_mu…_foo");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 8), "som…even");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 8), "som…_odd");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 9), "some…even");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 9), "some…_odd");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 10), "some…_even");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 10), "some…g_odd");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 11), "somet…_even");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 11), "somet…g_odd");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 12), "somet…g_even");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 12), "somet…ng_odd");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 13), "someth…g_even");
     EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 13), "something_odd");
     EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_even", 14), "something_even");
     EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("something_odd", 13), "something_odd");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("ääääääääää", 5), "ä…ä");
-    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("あぃいぅうぇえぉ", 7), "あぃ…えぉ");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("ääääääääää", 5), "ää…ää");
+    EEL_CHECK_STRING_RESULT (eel_str_middle_truncate ("あぃいぅうぇえぉ", 7), "あぃい…ぇえぉ");
 
     EEL_CHECK_STRING_RESULT (eel_str_strip_substring_and_after (NULL, "bar"), NULL);
     EEL_CHECK_STRING_RESULT (eel_str_strip_substring_and_after ("", "bar"), "");