diff --git a/derive/src/derive_enum.rs b/derive/src/derive_enum.rs
index 8c8daf1..b0edad6 100644
--- a/derive/src/derive_enum.rs
+++ b/derive/src/derive_enum.rs
@@ -39,9 +39,9 @@ impl DeriveEnum {
                 Ok(())
             })?
             .generate_fn("encode")
-            .with_generic_deps("E", [format!("{}::enc::Encoder", crate_name)])
+            .with_generic_deps("__E", [format!("{}::enc::Encoder", crate_name)])
             .with_self_arg(FnSelfArg::RefSelf)
-            .with_arg("encoder", "&mut E")
+            .with_arg("encoder", "&mut __E")
             .with_return_type(format!(
                 "core::result::Result<(), {}::error::EncodeError>",
                 crate_name
@@ -237,8 +237,8 @@ impl DeriveEnum {
                 Ok(())
             })?
             .generate_fn("decode")
-            .with_generic_deps("D", [format!("{}::de::Decoder", crate_name)])
-            .with_arg("decoder", "&mut D")
+            .with_generic_deps("__D", [format!("{}::de::Decoder", crate_name)])
+            .with_arg("decoder", "&mut __D")
             .with_return_type(format!("core::result::Result<Self, {}::error::DecodeError>", crate_name))
             .body(|fn_builder| {
                 if self.variants.is_empty() {
@@ -332,8 +332,8 @@ impl DeriveEnum {
                 Ok(())
             })?
             .generate_fn("borrow_decode")
-            .with_generic_deps("D", [format!("{}::de::BorrowDecoder<'__de>", crate_name)])
-            .with_arg("decoder", "&mut D")
+            .with_generic_deps("__D", [format!("{}::de::BorrowDecoder<'__de>", crate_name)])
+            .with_arg("decoder", "&mut __D")
             .with_return_type(format!("core::result::Result<Self, {}::error::DecodeError>", crate_name))
             .body(|fn_builder| {
                 if self.variants.is_empty() {
diff --git a/derive/src/derive_struct.rs b/derive/src/derive_struct.rs
index 14e4c9c..1b50cf8 100644
--- a/derive/src/derive_struct.rs
+++ b/derive/src/derive_struct.rs
@@ -31,9 +31,9 @@ impl DeriveStruct {
                 Ok(())
             })?
             .generate_fn("encode")
-            .with_generic_deps("E", [format!("{}::enc::Encoder", crate_name)])
+            .with_generic_deps("__E", [format!("{}::enc::Encoder", crate_name)])
             .with_self_arg(virtue::generate::FnSelfArg::RefSelf)
-            .with_arg("encoder", "&mut E")
+            .with_arg("encoder", "&mut __E")
             .with_return_type(format!(
                 "core::result::Result<(), {}::error::EncodeError>",
                 crate_name
@@ -80,8 +80,8 @@ impl DeriveStruct {
                 Ok(())
             })?
             .generate_fn("decode")
-            .with_generic_deps("D", [format!("{}::de::Decoder", crate_name)])
-            .with_arg("decoder", "&mut D")
+            .with_generic_deps("__D", [format!("{}::de::Decoder", crate_name)])
+            .with_arg("decoder", "&mut __D")
             .with_return_type(format!("core::result::Result<Self, {}::error::DecodeError>", crate_name))
             .body(|fn_body| {
                 // Ok(Self {
@@ -141,8 +141,8 @@ impl DeriveStruct {
                 Ok(())
             })?
             .generate_fn("borrow_decode")
-            .with_generic_deps("D", [format!("{}::de::BorrowDecoder<'__de>", crate_name)])
-            .with_arg("decoder", "&mut D")
+            .with_generic_deps("__D", [format!("{}::de::BorrowDecoder<'__de>", crate_name)])
+            .with_arg("decoder", "&mut __D")
             .with_return_type(format!("core::result::Result<Self, {}::error::DecodeError>", crate_name))
             .body(|fn_body| {
                 // Ok(Self {
diff --git a/tests/issues.rs b/tests/issues.rs
index 229bbbb..a3565a3 100644
--- a/tests/issues.rs
+++ b/tests/issues.rs
@@ -26,3 +26,6 @@ mod issue_523;
 
 #[path = "issues/issue_547.rs"]
 mod issue_547;
+
+#[path = "issues/issue_570.rs"]
+mod issue_570;
diff --git a/tests/issues/issue_570.rs b/tests/issues/issue_570.rs
new file mode 100644
index 0000000..def9043
--- /dev/null
+++ b/tests/issues/issue_570.rs
@@ -0,0 +1,6 @@
+#![cfg(feature = "derive")]
+
+#[derive(bincode::Encode, bincode::Decode)]
+pub struct Eg<D, E> {
+    data: (D, E),
+}