diff --git a/pkgs/development/tools/misc/gdb/default.nix b/pkgs/development/tools/misc/gdb/default.nix
index d1ac6eba709a..725fb86914be 100644
--- a/pkgs/development/tools/misc/gdb/default.nix
+++ b/pkgs/development/tools/misc/gdb/default.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
       "--with-separate-debug-dir=/run/current-system/sw/lib/debug"
     ++ stdenv.lib.optional (!pythonSupport) "--without-python"
     # TODO(@Ericson2314): This should be done in stdenv, not per-package
-    ++ stdenv.lib.optional (targetPlatform != hostPlatform) "--target=${target.config}"
+    ++ stdenv.lib.optional (targetPlatform != hostPlatform) "--target=${targetPlatform.config}"
     ++ stdenv.lib.optional multitarget "--enable-targets=all";
 
   postInstall =