diff --git a/calls.go b/calls.go
index 4b6f936..b9aac9f 100644
--- a/calls.go
+++ b/calls.go
@@ -220,7 +220,7 @@ func (a *DerivAPI) EconomicCalendar(r schema.EconomicCalendar) (resp schema.Econ
 	return
 }
 
-// ExchangeRates Retrieves the exchange rates from a base currency to all currencies supported by the system.
+// ExchangeRates Retrieves the exchange rate from a base currency to a target currency supported by the system.
 func (a *DerivAPI) ExchangeRates(r schema.ExchangeRates) (resp schema.ExchangeRatesResp, err error) {
 	id := a.getNextRequestID()
 	r.ReqId = &id
diff --git a/schema/exchange_rates.go b/schema/exchange_rates.go
index f63a641..8386034 100644
--- a/schema/exchange_rates.go
+++ b/schema/exchange_rates.go
@@ -62,8 +62,8 @@ func (j *ExchangeRatesSubscribe) UnmarshalJSON(b []byte) error {
 	return nil
 }
 
-// Retrieves the exchange rates from a base currency to all currencies supported by
-// the system.
+// Retrieves the exchange rate from a base currency to a target currency supported
+// by the system.
 type ExchangeRates struct {
 	// Base currency (can be obtained from `payout_currencies` call)
 	BaseCurrency string `json:"base_currency"`
@@ -86,7 +86,8 @@ type ExchangeRates struct {
 	// currency.
 	Subscribe *ExchangeRatesSubscribe `json:"subscribe,omitempty"`
 
-	// [Optional] Local currency
+	// [Optional] Target currency for the exchange rate. If subscribe is set,
+	// target_currency must be specified as well.
 	TargetCurrency *string `json:"target_currency,omitempty"`
 }
 
diff --git a/schema/exchange_rates_resp.go b/schema/exchange_rates_resp.go
index 235f72c..3d2a6b3 100644
--- a/schema/exchange_rates_resp.go
+++ b/schema/exchange_rates_resp.go
@@ -9,7 +9,7 @@ import "reflect"
 // Echo of the request made.
 type ExchangeRatesRespEchoReq map[string]interface{}
 
-// Exchange rate values from base to all other currencies
+// Exchange rate values from base to target currency
 type ExchangeRatesRespExchangeRates struct {
 	// Base currency
 	BaseCurrency *string `json:"base_currency,omitempty"`
@@ -17,11 +17,11 @@ type ExchangeRatesRespExchangeRates struct {
 	// Date retrieval epoch time represented as an integer number
 	Date *int `json:"date,omitempty"`
 
-	// Rates of exchanging a unit of base currency into the target currencies
+	// Rate of exchanging a unit of base currency into a target currency
 	Rates ExchangeRatesRespExchangeRatesRates `json:"rates,omitempty"`
 }
 
-// Rates of exchanging a unit of base currency into the target currencies
+// Rate of exchanging a unit of base currency into a target currency
 type ExchangeRatesRespExchangeRatesRates map[string]interface{}
 
 type ExchangeRatesRespMsgType string
@@ -77,13 +77,13 @@ func (j *ExchangeRatesRespSubscription) UnmarshalJSON(b []byte) error {
 	return nil
 }
 
-// The exchange rate values from the specified base currency to all currencies
-// supported by the system.
+// The exchange rate values from the specified base currency to the specified
+// target currency supported by the system.
 type ExchangeRatesResp struct {
 	// Echo of the request made.
 	EchoReq ExchangeRatesRespEchoReq `json:"echo_req"`
 
-	// Exchange rate values from base to all other currencies
+	// Exchange rate values from base to target currency
 	ExchangeRates *ExchangeRatesRespExchangeRates `json:"exchange_rates,omitempty"`
 
 	// Action name of the request made.
diff --git a/subscription_calls.go b/subscription_calls.go
index 699231a..dc05394 100644
--- a/subscription_calls.go
+++ b/subscription_calls.go
@@ -37,7 +37,7 @@ func (a *DerivAPI) SubscribeCryptoEstimations(r schema.CryptoEstimations) (rsp s
 	return
 }
 
-// SubscribeExchangeRates Retrieves the exchange rates from a base currency to all currencies supported by the system.
+// SubscribeExchangeRates Retrieves the exchange rate from a base currency to a target currency supported by the system.
 func (a *DerivAPI) SubscribeExchangeRates(r schema.ExchangeRates) (rsp schema.ExchangeRatesResp, s *Subsciption[schema.ExchangeRatesResp, schema.ExchangeRatesResp], err error) {
 	id := a.getNextRequestID()
 	var f schema.ExchangeRatesSubscribe = 1