diff --git a/sources/ClangSharp.PInvokeGenerator/PInvokeGenerator.VisitDecl.cs b/sources/ClangSharp.PInvokeGenerator/PInvokeGenerator.VisitDecl.cs
index cbf3f8c9..efe8e0a9 100644
--- a/sources/ClangSharp.PInvokeGenerator/PInvokeGenerator.VisitDecl.cs
+++ b/sources/ClangSharp.PInvokeGenerator/PInvokeGenerator.VisitDecl.cs
@@ -2913,22 +2913,16 @@ bool IsConstant(Expr initExpr)
                 // case CX_StmtClass.CX_StmtClass_BuiltinBitCastExpr:
 
                 case CX_StmtClass.CX_StmtClass_CStyleCastExpr:
+                case CX_StmtClass.CX_StmtClass_CXXStaticCastExpr:
+                case CX_StmtClass.CX_StmtClass_CXXFunctionalCastExpr:
                 {
-                    var cStyleCastExpr = (CStyleCastExpr)initExpr;
-                    return IsConstant(cStyleCastExpr.SubExprAsWritten);
+                    var cxxFunctionalCastExpr = (ExplicitCastExpr)initExpr;
+                    return IsConstant(cxxFunctionalCastExpr.SubExprAsWritten);
                 }
 
-                // case CX_StmtClass.CX_StmtClass_CXXFunctionalCastExpr:
                 // case CX_StmtClass.CX_StmtClass_CXXConstCastExpr:
                 // case CX_StmtClass.CX_StmtClass_CXXDynamicCastExpr:
                 // case CX_StmtClass.CX_StmtClass_CXXReinterpretCastExpr:
-
-                case CX_StmtClass.CX_StmtClass_CXXStaticCastExpr:
-                {
-                    var cxxStaticCastExpr = (CXXStaticCastExpr)initExpr;
-                    return IsConstant(cxxStaticCastExpr.SubExprAsWritten);
-                }
-
                 // case CX_StmtClass.CX_StmtClass_ObjCBridgedCastExpr:
 
                 case CX_StmtClass.CX_StmtClass_ImplicitCastExpr:
diff --git a/sources/ClangSharp.PInvokeGenerator/PInvokeGenerator.cs b/sources/ClangSharp.PInvokeGenerator/PInvokeGenerator.cs
index 6ff0549a..99d0ddcc 100644
--- a/sources/ClangSharp.PInvokeGenerator/PInvokeGenerator.cs
+++ b/sources/ClangSharp.PInvokeGenerator/PInvokeGenerator.cs
@@ -2617,6 +2617,7 @@ private bool IsUnchecked(string targetTypeName, Stmt stmt)
 
                 case CX_StmtClass.CX_StmtClass_CStyleCastExpr:
                 case CX_StmtClass.CX_StmtClass_CXXStaticCastExpr:
+                case CX_StmtClass.CX_StmtClass_CXXFunctionalCastExpr:
                 {
                     var explicitCastExpr = (ExplicitCastExpr)stmt;
                     var explicitCastExprTypeName = GetRemappedTypeName(explicitCastExpr, context: null, explicitCastExpr.Type, out _);
@@ -2626,7 +2627,6 @@ private bool IsUnchecked(string targetTypeName, Stmt stmt)
                         || (IsUnsigned(targetTypeName) != IsUnsigned(explicitCastExprTypeName));
                 }
 
-                // case CX_StmtClass.CX_StmtClass_CXXFunctionalCastExpr:
                 // case CX_StmtClass.CX_StmtClass_CXXConstCastExpr:
                 // case CX_StmtClass.CX_StmtClass_CXXDynamicCastExpr:
                 // case CX_StmtClass.CX_StmtClass_CXXReinterpretCastExpr:
diff --git a/tests/ClangSharp.PInvokeGenerator.UnitTests/VarDeclarationTest.cs b/tests/ClangSharp.PInvokeGenerator.UnitTests/VarDeclarationTest.cs
index 1cb83127..bb7a1128 100644
--- a/tests/ClangSharp.PInvokeGenerator.UnitTests/VarDeclarationTest.cs
+++ b/tests/ClangSharp.PInvokeGenerator.UnitTests/VarDeclarationTest.cs
@@ -240,6 +240,26 @@ public static partial class Methods
             await ValidateGeneratedBindingsAsync(inputContents, expectedOutputContents);
         }
 
+
+        [Fact]
+        public async Task UncheckedFunctionLikeCastMacroTest()
+        {
+            var inputContents = $@"#define MyMacro1 unsigned(-1)";
+
+            var expectedOutputContents = $@"namespace ClangSharp.Test
+{{
+    public static partial class Methods
+    {{
+        [NativeTypeName(""#define MyMacro1 unsigned(-1)"")]
+        public const uint MyMacro1 = unchecked((uint)(-1));
+    }}
+}}
+";
+
+            await ValidateGeneratedBindingsAsync(inputContents, expectedOutputContents);
+        }
+
+
         [Fact]
         public async Task UncheckedConversionMacroTest2()
         {