diff --git a/pkg/chains/solana/proto_helpers.go b/pkg/chains/solana/proto_helpers.go
index 228e3281d..4963cbbac 100644
--- a/pkg/chains/solana/proto_helpers.go
+++ b/pkg/chains/solana/proto_helpers.go
@@ -1257,12 +1257,8 @@ func ConvertSubmitTransactionReplyFromProto(p *SubmitTransactionReply) (*solana.
 	if p == nil {
 		return nil, nil
 	}
-	sig, err := ConvertSignatureFromProto(p.Signature)
-	if err != nil {
-		return nil, err
-	}
+
 	return &solana.SubmitTransactionReply{
-		Signature:      sig,
 		IdempotencyKey: p.IdempotencyKey,
 		Status:         solana.TransactionStatus(p.Status),
 	}, nil
@@ -1273,7 +1269,6 @@ func ConvertSubmitTransactionReplyToProto(r *solana.SubmitTransactionReply) *Sub
 		return nil
 	}
 	return &SubmitTransactionReply{
-		Signature:      r.Signature[:],
 		IdempotencyKey: r.IdempotencyKey,
 		Status:         TxStatus(r.Status),
 	}
diff --git a/pkg/chains/solana/solana.pb.go b/pkg/chains/solana/solana.pb.go
index 654b3c91e..fae5ff077 100644
--- a/pkg/chains/solana/solana.pb.go
+++ b/pkg/chains/solana/solana.pb.go
@@ -2757,7 +2757,6 @@ func (x *SimulateTransactionAccountsOpts) GetAddresses() [][]byte {
 // Submit transaction result.
 type SubmitTransactionReply struct {
 	state          protoimpl.MessageState `protogen:"open.v1"`
-	Signature      []byte                 `protobuf:"bytes,1,opt,name=signature,proto3" json:"signature,omitempty"`                                 // 64-byte signature
 	IdempotencyKey string                 `protobuf:"bytes,2,opt,name=idempotency_key,json=idempotencyKey,proto3" json:"idempotency_key,omitempty"` // echo key
 	Status         TxStatus               `protobuf:"varint,3,opt,name=status,proto3,enum=loop.solana.TxStatus" json:"status,omitempty"`
 	unknownFields  protoimpl.UnknownFields
@@ -2794,13 +2793,6 @@ func (*SubmitTransactionReply) Descriptor() ([]byte, []int) {
 	return file_solana_proto_rawDescGZIP(), []int{42}
 }
 
-func (x *SubmitTransactionReply) GetSignature() []byte {
-	if x != nil {
-		return x.Signature
-	}
-	return nil
-}
-
 func (x *SubmitTransactionReply) GetIdempotencyKey() string {
 	if x != nil {
 		return x.IdempotencyKey
@@ -4190,9 +4182,8 @@ const file_solana_proto_rawDesc = "" +
 	"\x04opts\x18\x03 \x01(\v2\x1b.loop.solana.SimulateTXOptsR\x04opts\"v\n" +
 	"\x1fSimulateTransactionAccountsOpts\x125\n" +
 	"\bencoding\x18\x01 \x01(\x0e2\x19.loop.solana.EncodingTypeR\bencoding\x12\x1c\n" +
-	"\taddresses\x18\x02 \x03(\fR\taddresses\"\x8e\x01\n" +
-	"\x16SubmitTransactionReply\x12\x1c\n" +
-	"\tsignature\x18\x01 \x01(\fR\tsignature\x12'\n" +
+	"\taddresses\x18\x02 \x03(\fR\taddresses\"p\n" +
+	"\x16SubmitTransactionReply\x12'\n" +
 	"\x0fidempotency_key\x18\x02 \x01(\tR\x0eidempotencyKey\x12-\n" +
 	"\x06status\x18\x03 \x01(\x0e2\x15.loop.solana.TxStatusR\x06status\"\x95\x01\n" +
 	"\x18SubmitTransactionRequest\x12,\n" +
diff --git a/pkg/chains/solana/solana.proto b/pkg/chains/solana/solana.proto
index f777780a0..2e75b772d 100644
--- a/pkg/chains/solana/solana.proto
+++ b/pkg/chains/solana/solana.proto
@@ -342,7 +342,6 @@ message SimulateTransactionAccountsOpts {
 
 // Submit transaction result.
 message SubmitTransactionReply {
-  bytes signature = 1;       // 64-byte signature
   string idempotency_key = 2; // echo key
   TxStatus status = 3;
 }
diff --git a/pkg/loop/internal/relayerset/relayerset_test.go b/pkg/loop/internal/relayerset/relayerset_test.go
index 49c5ce314..5dc88a537 100644
--- a/pkg/loop/internal/relayerset/relayerset_test.go
+++ b/pkg/loop/internal/relayerset/relayerset_test.go
@@ -834,7 +834,6 @@ func Test_RelayerSet_SolanaService(t *testing.T) {
 					EncodedTransaction: "BASE64TX==",
 				}
 				expected := &soltypes.SubmitTransactionReply{
-					Signature:      soltypes.Signature{0xaa, 0xbb},
 					IdempotencyKey: "idem-123",
 					Status:         soltypes.TxSuccess,
 				}
@@ -845,7 +844,6 @@ func Test_RelayerSet_SolanaService(t *testing.T) {
 				out, err := sol.SubmitTransaction(ctx, req)
 				require.NoError(t, err)
 				require.Equal(t, expected.IdempotencyKey, out.IdempotencyKey)
-				require.Equal(t, expected.Signature, out.Signature)
 				require.Equal(t, expected.Status, out.Status)
 			},
 		},
diff --git a/pkg/types/chains/solana/txm_types.go b/pkg/types/chains/solana/txm_types.go
index d7f4004e7..726e8fdff 100644
--- a/pkg/types/chains/solana/txm_types.go
+++ b/pkg/types/chains/solana/txm_types.go
@@ -26,7 +26,6 @@ type ComputeConfig struct {
 }
 
 type SubmitTransactionReply struct {
-	Signature      Signature
 	IdempotencyKey string
 	Status         TransactionStatus
 }