diff --git a/pkgs/development/compilers/openjdk/default.nix b/pkgs/development/compilers/openjdk/default.nix
index 257595f1e95..c2b612c4237 100644
--- a/pkgs/development/compilers/openjdk/default.nix
+++ b/pkgs/development/compilers/openjdk/default.nix
@@ -53,6 +53,7 @@ stdenv.mkDerivation rec {
     USRBIN_PATH="" \
     COMPILER_PATH="" \
     DEVTOOLS_PATH="" \
+    UNIXCOMMAND_PATH="" \
     NAWK=${gawk}/bin/gawk \
     BOOTDIR=${jdk} \
     FIND=${findutils}/bin/find \