diff --git a/Sources/Starknet/Data/TypedData/StarknetTypedData.swift b/Sources/Starknet/Data/TypedData/StarknetTypedData.swift
index a6e1070f5..53a1b6a19 100644
--- a/Sources/Starknet/Data/TypedData/StarknetTypedData.swift
+++ b/Sources/Starknet/Data/TypedData/StarknetTypedData.swift
@@ -18,6 +18,7 @@ public enum StarknetTypedDataError: Error, Equatable {
     case contextNotDefined
     case parentNotDefined
     case keyNotDefined
+    case invalidBool(StarknetTypedData.Element)
     case invalidMerkleTree
     case invalidShortString
     case encodingError
@@ -451,18 +452,18 @@ extension StarknetTypedData {
         switch element {
         case let .felt(felt):
             guard felt == .zero || felt == .one else {
-                throw StarknetTypedDataError.decodingError
+                throw StarknetTypedDataError.invalidBool(element)
             }
             return felt
         case let .bool(bool):
             return bool ? .one : .zero
         case let .string(string):
             guard let bool = Bool(string) else {
-                throw StarknetTypedDataError.decodingError
+                throw StarknetTypedDataError.invalidBool(element)
             }
             return bool ? .one : .zero
         default:
-            throw StarknetTypedDataError.decodingError
+            throw StarknetTypedDataError.invalidBool(element)
         }
     }
 
diff --git a/Tests/StarknetTests/Data/TypedDataTests.swift b/Tests/StarknetTests/Data/TypedDataTests.swift
index 3feb3de85..294fd3a01 100644
--- a/Tests/StarknetTests/Data/TypedDataTests.swift
+++ b/Tests/StarknetTests/Data/TypedDataTests.swift
@@ -151,6 +151,16 @@ final class TypedDataTests: XCTestCase {
         }
     }
 
+    func testEncodeInvalidBool() throws {
+        let cases: [any Encodable] = [2, "2", "0x123"]
+        for input in cases {
+            let element = try JSONDecoder().decode(StarknetTypedData.Element.self, from: JSONEncoder().encode(input))
+            XCTAssertThrowsError(try CasesRev1.td.encode(element: element, forType: "bool")) { error in
+                XCTAssertEqual(error as? StarknetTypedDataError, .invalidBool(element))
+            }
+        }
+    }
+
     func testEncodeType() throws {
         let cases: [(StarknetTypedData, String, String)] =
             [