diff --git a/csbindgen-tests/build.rs b/csbindgen-tests/build.rs
index d7b4801..35dfd61 100644
--- a/csbindgen-tests/build.rs
+++ b/csbindgen-tests/build.rs
@@ -129,9 +129,10 @@ fn main() -> Result<(), Box<dyn Error>> {
     csbindgen::Builder::new()
         .input_bindgen_file("src/physx/physx_generated.rs")
         .input_bindgen_file("src/physx/x86_64-pc-windows-msvc/structgen.rs")
+        // .csharp_disable_emit_dll_name(true)
         .csharp_namespace("Physx")
-        .csharp_class_name("LibPhysxd")
-        .csharp_dll_name("libphysx")
+        .csharp_class_name("LibPhysx")
+        .csharp_dll_name("libphys")
         .generate_csharp_file("../dotnet-sandbox/libphysx_csbindgen.cs")?;
 
     Ok(())
diff --git a/csbindgen/src/builder.rs b/csbindgen/src/builder.rs
index 6d44107..4ff3427 100644
--- a/csbindgen/src/builder.rs
+++ b/csbindgen/src/builder.rs
@@ -22,6 +22,7 @@ pub struct BindgenOptions {
     pub csharp_namespace: String,
     pub csharp_class_name: String,
     pub csharp_dll_name: String,
+    pub csharp_disable_emit_dll_name: bool,
     pub csharp_class_accessibility: String,
     pub csharp_entry_point_prefix: String,
     pub csharp_method_prefix: String,
@@ -43,6 +44,7 @@ impl Default for Builder {
                 csharp_namespace: "CsBindgen".to_string(),
                 csharp_class_name: "NativeMethods".to_string(),
                 csharp_dll_name: "".to_string(),
+                csharp_disable_emit_dll_name: false,
                 csharp_entry_point_prefix: "".to_string(),
                 csharp_method_prefix: "".to_string(),
                 csharp_class_accessibility: "internal".to_string(),
@@ -121,6 +123,12 @@ impl Builder {
         self
     }
 
+    /// configure don't emit __DllName
+    pub fn csharp_disable_emit_dll_name(mut self, csharp_disable_emit_dll_name: bool) -> Builder {
+        self.options.csharp_disable_emit_dll_name = csharp_disable_emit_dll_name;
+        self
+    }
+
     /// configure C# DllImport EntryPoint prefix,
     /// `[DllImport(, EntryPoint ="{csharp_entry_point_prefix}foo")]`
     pub fn csharp_entry_point_prefix<T: Into<String>>(
diff --git a/csbindgen/src/emitter.rs b/csbindgen/src/emitter.rs
index 9f68467..9c5d7f9 100644
--- a/csbindgen/src/emitter.rs
+++ b/csbindgen/src/emitter.rs
@@ -87,7 +87,7 @@ pub fn emit_csharp(
     let method_prefix = &options.csharp_method_prefix;
     let accessibility = &options.csharp_class_accessibility;
 
-    let dll_name = match options.csharp_if_symbol.as_str() {
+    let mut dll_name = match options.csharp_if_symbol.as_str() {
         "" => format!(
             "        const string __DllName = \"{}\";",
             options.csharp_dll_name
@@ -104,6 +104,9 @@ pub fn emit_csharp(
             )
         }
     };
+    if options.csharp_disable_emit_dll_name {
+        dll_name = "".to_string();
+    }
 
     let mut method_list_string = String::new();
     for item in methods {
diff --git a/dotnet-sandbox/BindingGroupExtensions.cs b/dotnet-sandbox/BindingGroupExtensions.cs
index 09c500c..cc05e58 100644
--- a/dotnet-sandbox/BindingGroupExtensions.cs
+++ b/dotnet-sandbox/BindingGroupExtensions.cs
@@ -3,7 +3,7 @@
 namespace Physx
 {
     [GroupedNativeMethodsGenerator.GroupedNativeMethods(removePrefix: "Px")]
-    internal static unsafe partial class LibPhysxd
+    internal static unsafe partial class LibPhysx
     {
     }
 }
diff --git a/dotnet-sandbox/libphysx_csbindgen.cs b/dotnet-sandbox/libphysx_csbindgen.cs
index 5a1c68e..240d28c 100644
--- a/dotnet-sandbox/libphysx_csbindgen.cs
+++ b/dotnet-sandbox/libphysx_csbindgen.cs
@@ -9,9 +9,9 @@ using System.Runtime.InteropServices;
 
 namespace Physx
 {
-    internal static unsafe partial class LibPhysxd
+    internal static unsafe partial class LibPhysx
     {
-        const string __DllName = "libphysx";
+        const string __DllName = "libphys";
 
         [DllImport(__DllName, EntryPoint = "PxAllocatorCallback_delete", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
         public static extern void PxAllocatorCallback_delete(PxAllocatorCallback* self_);