diff --git a/scene/animation/animation_mixer.cpp b/scene/animation/animation_mixer.cpp
index 5ae1bb72334..6662a10d72e 100644
--- a/scene/animation/animation_mixer.cpp
+++ b/scene/animation/animation_mixer.cpp
@@ -108,7 +108,7 @@ bool AnimationMixer::_get(const StringName &p_name, Variant &r_ret) const {
 
 void AnimationMixer::_get_property_list(List<PropertyInfo> *p_list) const {
 	List<PropertyInfo> anim_names;
-	anim_names.push_back(PropertyInfo(Variant::DICTIONARY, PNAME("libraries")));
+	anim_names.push_back(PropertyInfo(Variant::DICTIONARY, PNAME("libraries"), PROPERTY_HINT_DICTIONARY_TYPE, "StringName;AnimationLibrary"));
 	for (const PropertyInfo &E : anim_names) {
 		p_list->push_back(E);
 	}