diff --git a/src/realm.h b/src/realm.h
index cf7019cc5d6..0eee2c6ab2c 100644
--- a/src/realm.h
+++ b/src/realm.h
@@ -132,7 +132,6 @@ typedef enum realm_value_type {
     RLM_TYPE_LINK,
     RLM_TYPE_UUID,
     RLM_TYPE_LIST,
-    RLM_TYPE_SET,
     RLM_TYPE_DICTIONARY,
 } realm_value_type_e;
 
diff --git a/src/realm/object-store/c_api/conversion.hpp b/src/realm/object-store/c_api/conversion.hpp
index 6f3a48480c3..e3b4b1ad153 100644
--- a/src/realm/object-store/c_api/conversion.hpp
+++ b/src/realm/object-store/c_api/conversion.hpp
@@ -146,8 +146,6 @@ static inline Mixed from_capi(realm_value_t val)
             return Mixed{UUID{from_capi(val.uuid)}};
         case RLM_TYPE_LIST:
             return Mixed{0, CollectionType::List};
-        case RLM_TYPE_SET:
-            return Mixed{0, CollectionType::Set};
         case RLM_TYPE_DICTIONARY:
             return Mixed{0, CollectionType::Dictionary};
     }
@@ -231,9 +229,6 @@ static inline realm_value_t to_capi(Mixed value)
                 if (type == type_List) {
                     val.type = RLM_TYPE_LIST;
                 }
-                else if (type == type_Set) {
-                    val.type = RLM_TYPE_SET;
-                }
                 else if (type == type_Dictionary) {
                     val.type = RLM_TYPE_DICTIONARY;
                 }
diff --git a/src/realm/object-store/c_api/query.cpp b/src/realm/object-store/c_api/query.cpp
index e416bd182bc..fc6de90e8fc 100644
--- a/src/realm/object-store/c_api/query.cpp
+++ b/src/realm/object-store/c_api/query.cpp
@@ -168,8 +168,6 @@ struct QueryArgumentsAdapter : query_parser::Arguments {
                 return type_UUID;
             case RLM_TYPE_LIST:
                 return type_List;
-            case RLM_TYPE_SET:
-                return type_Set;
             case RLM_TYPE_DICTIONARY:
                 return type_Dictionary;
         }
diff --git a/test/object-store/c_api/c_api.cpp b/test/object-store/c_api/c_api.cpp
index d2f24ed48b5..736952f5d43 100644
--- a/test/object-store/c_api/c_api.cpp
+++ b/test/object-store/c_api/c_api.cpp
@@ -210,7 +210,6 @@ bool rlm_val_eq(realm_value_t lhs, realm_value_t rhs)
     switch (lhs.type) {
         case RLM_TYPE_NULL:
         case RLM_TYPE_LIST:
-        case RLM_TYPE_SET:
         case RLM_TYPE_DICTIONARY:
             return true;
         case RLM_TYPE_INT: