diff --git a/pkgs/development/go-modules/generic/default.nix b/pkgs/development/go-modules/generic/default.nix
index 93b09acbda1b..89258062f263 100644
--- a/pkgs/development/go-modules/generic/default.nix
+++ b/pkgs/development/go-modules/generic/default.nix
@@ -106,7 +106,7 @@ go.stdenv.mkDerivation (
         echo "$subPackages" | sed "s,\(^\| \),\1$goPackagePath/,g"
       else
         pushd go/src >/dev/null
-        find "$goPackagePath" -type f -name \*$type.go -exec dirname {} \; | sort | uniq
+        find "$goPackagePath" -type f -name \*$type.go -exec dirname {} \; | grep -v "/vendor/" | sort | uniq
         popd >/dev/null
       fi
     }