diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 485f28f1d9c..17d303c5db4 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4146,7 +4146,7 @@ let
 
   libiconvOrEmpty = if (libiconvOrNull == null) then [] else libiconv;
 
-  libiconvOrNull = if gcc ? libc then null else libiconv;
+  libiconvOrNull = if ((gcc ? libc) || stdenv.isGlibc) then null else libiconv;
 
   libiconvOrLibc = if (libiconvOrNull == null) then gcc.libc else libiconv;