diff --git a/src/deemon/objects/list.c b/src/deemon/objects/list.c
index 2084c538e..b45d82d91 100644
--- a/src/deemon/objects/list.c
+++ b/src/deemon/objects/list.c
@@ -2756,6 +2756,8 @@ list_find(List *self, size_t argc, DeeObject *const *argv, DeeObject *kw) {
 	         : list_find_impl(self, item, start, end);
 	if unlikely(result == (size_t)Dee_COMPARE_ERR)
 		goto err;
+	if unlikely(result == (size_t)-1)
+		return_reference_(DeeInt_MinusOne);
 	return DeeInt_NewSize(result);
 err:
 	return NULL;
@@ -2774,6 +2776,8 @@ list_rfind(List *self, size_t argc, DeeObject *const *argv, DeeObject *kw) {
 	         : list_rfind_impl(self, item, start, end);
 	if unlikely(result == (size_t)Dee_COMPARE_ERR)
 		goto err;
+	if unlikely(result == (size_t)-1)
+		return_reference_(DeeInt_MinusOne);
 	return DeeInt_NewSize(result);
 err:
 	return NULL;
diff --git a/src/deemon/objects/seq/default-api-methods.c b/src/deemon/objects/seq/default-api-methods.c
index 8d401a86e..848b88c8c 100644
--- a/src/deemon/objects/seq/default-api-methods.c
+++ b/src/deemon/objects/seq/default-api-methods.c
@@ -2595,6 +2595,8 @@ generic_seq_find(DeeObject *self, size_t argc, DeeObject *const *argv, DeeObject
 	         : new_DeeSeqFind(self, item, start, end);
 	if unlikely(result == (size_t)Dee_COMPARE_ERR)
 		goto err;
+	if unlikely(result == (size_t)-1)
+		return_reference_(DeeInt_MinusOne);
 	return DeeInt_NewSize(result);
 err:
 	return NULL;
@@ -2613,6 +2615,8 @@ generic_seq_rfind(DeeObject *self, size_t argc, DeeObject *const *argv, DeeObjec
 	         : new_DeeSeqRFind(self, item, start, end);
 	if unlikely(result == (size_t)Dee_COMPARE_ERR)
 		goto err;
+	if unlikely(result == (size_t)-1)
+		return_reference_(DeeInt_MinusOne);
 	return DeeInt_NewSize(result);
 err:
 	return NULL;
diff --git a/src/deemon/objects/seq/svec.c b/src/deemon/objects/seq/svec.c
index e8b2bcc87..e9a45cc96 100644
--- a/src/deemon/objects/seq/svec.c
+++ b/src/deemon/objects/seq/svec.c
@@ -1244,6 +1244,8 @@ svec_find(SharedVector *self, size_t argc, DeeObject *const *argv, DeeObject *kw
 	         : svec_find_impl(self, item, start, end);
 	if unlikely(result == (size_t)Dee_COMPARE_ERR)
 		goto err;
+	if unlikely(result == (size_t)-1)
+		return_reference_(DeeInt_MinusOne);
 	return DeeInt_NewSize(result);
 err:
 	return NULL;
@@ -1262,6 +1264,8 @@ svec_rfind(SharedVector *self, size_t argc, DeeObject *const *argv, DeeObject *k
 	         : svec_rfind_impl(self, item, start, end);
 	if unlikely(result == (size_t)Dee_COMPARE_ERR)
 		goto err;
+	if unlikely(result == (size_t)-1)
+		return_reference_(DeeInt_MinusOne);
 	return DeeInt_NewSize(result);
 err:
 	return NULL;
diff --git a/src/deemon/objects/tuple.c b/src/deemon/objects/tuple.c
index 44bdcc10d..df52a8664 100644
--- a/src/deemon/objects/tuple.c
+++ b/src/deemon/objects/tuple.c
@@ -1939,6 +1939,8 @@ tuple_find(Tuple *self, size_t argc, DeeObject *const *argv, DeeObject *kw) {
 	         : tuple_find_impl(self, item, start, end);
 	if unlikely(result == (size_t)Dee_COMPARE_ERR)
 		goto err;
+	if unlikely(result == (size_t)-1)
+		return_reference_(DeeInt_MinusOne);
 	return DeeInt_NewSize(result);
 err:
 	return NULL;
@@ -1957,6 +1959,8 @@ tuple_rfind(Tuple *self, size_t argc, DeeObject *const *argv, DeeObject *kw) {
 	         : tuple_rfind_impl(self, item, start, end);
 	if unlikely(result == (size_t)Dee_COMPARE_ERR)
 		goto err;
+	if unlikely(result == (size_t)-1)
+		return_reference_(DeeInt_MinusOne);
 	return DeeInt_NewSize(result);
 err:
 	return NULL;
diff --git a/src/dex/collections/fixedlist.c b/src/dex/collections/fixedlist.c
index d6ebcf935..7656c6bca 100644
--- a/src/dex/collections/fixedlist.c
+++ b/src/dex/collections/fixedlist.c
@@ -1407,6 +1407,8 @@ fl_find(FixedList *self, size_t argc, DeeObject *const *argv, DeeObject *kw) {
 	         : fl_find_impl(self, item, start, end);
 	if unlikely(result == (size_t)Dee_COMPARE_ERR)
 		goto err;
+	if unlikely(result == (size_t)-1)
+		return_reference_(DeeInt_MinusOne);
 	return DeeInt_NewSize(result);
 err:
 	return NULL;
@@ -1425,6 +1427,8 @@ fl_rfind(FixedList *self, size_t argc, DeeObject *const *argv, DeeObject *kw) {
 	         : fl_rfind_impl(self, item, start, end);
 	if unlikely(result == (size_t)Dee_COMPARE_ERR)
 		goto err;
+	if unlikely(result == (size_t)-1)
+		return_reference_(DeeInt_MinusOne);
 	return DeeInt_NewSize(result);
 err:
 	return NULL;