diff --git a/pkgs/development/compilers/rust/binary.nix b/pkgs/development/compilers/rust/binary.nix
index ce4250f675e9..1145f4da8f66 100644
--- a/pkgs/development/compilers/rust/binary.nix
+++ b/pkgs/development/compilers/rust/binary.nix
@@ -19,7 +19,7 @@ in
 
 rec {
   rustc = stdenv.mkDerivation {
-    name = "rustc-${versionType}-${version}";
+    pname = "rustc-${versionType}";
 
     inherit version;
     inherit src;
@@ -71,7 +71,7 @@ rec {
   };
 
   cargo = stdenv.mkDerivation {
-    name = "cargo-${versionType}-${version}";
+    pname = "cargo-${versionType}";
 
     inherit version;
     inherit src;
diff --git a/pkgs/development/compilers/rust/cargo.nix b/pkgs/development/compilers/rust/cargo.nix
index ee909e973a35..b50f36f0d9b6 100644
--- a/pkgs/development/compilers/rust/cargo.nix
+++ b/pkgs/development/compilers/rust/cargo.nix
@@ -5,7 +5,7 @@
 }:
 
 rustPlatform.buildRustPackage {
-  name = "cargo-${rustc.version}";
+  pname = "cargo";
   inherit (rustc) version src;
 
   # the rust source tarball already has all the dependencies vendored, no need to fetch them again