diff --git a/src/tools/autocomplete.c b/src/tools/autocomplete.c
index 438b48b7..ee8b5437 100644
--- a/src/tools/autocomplete.c
+++ b/src/tools/autocomplete.c
@@ -82,7 +82,7 @@ autocomplete_length(Autocomplete ac)
     }
 }
 
-gboolean
+void
 autocomplete_add(Autocomplete ac, const char *item)
 {
     char *item_cpy;
@@ -90,21 +90,21 @@ autocomplete_add(Autocomplete ac, const char *item)
 
     // if item already exists
     if (curr != NULL) {
-        return FALSE;
+        return;
     }
 
     item_cpy = strdup(item);
     ac->items = g_slist_insert_sorted(ac->items, item_cpy, (GCompareFunc)strcmp);
-    return TRUE;
+    return;
 }
 
-gboolean
+void
 autocomplete_remove(Autocomplete ac, const char * const item)
 {
     GSList *curr = g_slist_find_custom(ac->items, item, (GCompareFunc)strcmp);
 
     if (!curr) {
-        return FALSE;
+        return;
     }
 
     // reset last found if it points to the item to be removed
@@ -115,7 +115,7 @@ autocomplete_remove(Autocomplete ac, const char * const item)
     free(curr->data);
     ac->items = g_slist_delete_link(ac->items, curr);
 
-    return TRUE;
+    return;
 }
 
 GSList *
diff --git a/src/tools/autocomplete.h b/src/tools/autocomplete.h
index 908e273e..0a3b5b88 100644
--- a/src/tools/autocomplete.h
+++ b/src/tools/autocomplete.h
@@ -27,27 +27,33 @@
 
 typedef char*(*autocomplete_func)(char *);
 typedef struct autocomplete_t *Autocomplete;
-typedef const char * (*PStrFunc)(const void *obj);
-typedef void * (*PCopyFunc)(const void *obj);
-typedef int (*PEqualFunc)(const void *o1, const void *o2);
-typedef int (*PEqualDeepFunc)(const void *o1, const void *o2);
 
+// allocate new autocompleter with no items
 Autocomplete autocomplete_new(void);
-Autocomplete obj_autocomplete_new(PStrFunc str_func, PCopyFunc copy_func,
-    PEqualDeepFunc equal_deep_func, GDestroyNotify free_func);
+
+// Remove all items from the autocompleter
 void autocomplete_clear(Autocomplete ac);
-void autocomplete_reset(Autocomplete ac);
+
+// free all memory used by the autocompleter
 void autocomplete_free(Autocomplete ac);
-gboolean autocomplete_add(Autocomplete ac, const char *item);
-gboolean autocomplete_remove(Autocomplete ac, const char * const item);
-GSList * autocomplete_get_list(Autocomplete ac);
+
+void autocomplete_add(Autocomplete ac, const char *item);
+void autocomplete_remove(Autocomplete ac, const char * const item);
+
+// find the next item prefixed with search string
 gchar * autocomplete_complete(Autocomplete ac, gchar *search_str);
+
+GSList * autocomplete_get_list(Autocomplete ac);
 gint autocomplete_length(Autocomplete ac);
+
 char * autocomplete_param_with_func(char *input, int *size, char *command,
     autocomplete_func func);
+
 char * autocomplete_param_with_ac(char *input, int *size, char *command,
     Autocomplete ac);
+
 char * autocomplete_param_no_with_func(char *input, int *size, char *command,
     int arg_number, autocomplete_func func);
 
+void autocomplete_reset(Autocomplete ac);
 #endif
diff --git a/tests/test_autocomplete.c b/tests/test_autocomplete.c
index 77525035..58a0e596 100644
--- a/tests/test_autocomplete.c
+++ b/tests/test_autocomplete.c
@@ -113,40 +113,6 @@ static void add_two_same_updates(void)
     autocomplete_clear(ac);
 }
 
-static void add_one_returns_true(void)
-{
-    Autocomplete ac = autocomplete_new();
-    int result = autocomplete_add(ac, "Hello");
-
-    assert_true(result);
-
-    autocomplete_clear(ac);
-}
-
-static void add_two_different_returns_true(void)
-{
-    Autocomplete ac = autocomplete_new();
-    int result1 = autocomplete_add(ac, "Hello");
-    int result2 = autocomplete_add(ac, "Hello there");
-
-    assert_true(result1);
-    assert_true(result2);
-
-    autocomplete_clear(ac);
-}
-
-static void add_two_same_returns_false(void)
-{
-    Autocomplete ac = autocomplete_new();
-    int result1 = autocomplete_add(ac, "Hello");
-    int result2 = autocomplete_add(ac, "Hello");
-
-    assert_true(result1);
-    assert_false(result2);
-
-    autocomplete_clear(ac);
-}
-
 void register_autocomplete_tests(void)
 {
     TEST_MODULE("autocomplete tests");
@@ -160,7 +126,4 @@ void register_autocomplete_tests(void)
     TEST(add_two_adds_two);
     TEST(add_two_same_adds_one);
     TEST(add_two_same_updates);
-    TEST(add_one_returns_true);
-    TEST(add_two_different_returns_true);
-    TEST(add_two_same_returns_false);
 }