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Diffstat (limited to 'nixpkgs/pkgs/development/compilers/openjdk/12.nix')
-rw-r--r--nixpkgs/pkgs/development/compilers/openjdk/12.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/nixpkgs/pkgs/development/compilers/openjdk/12.nix b/nixpkgs/pkgs/development/compilers/openjdk/12.nix
index 29992fdae687..16c2fd766bce 100644
--- a/nixpkgs/pkgs/development/compilers/openjdk/12.nix
+++ b/nixpkgs/pkgs/development/compilers/openjdk/12.nix
@@ -114,7 +114,7 @@ let
       # Set JAVA_HOME automatically.
       mkdir -p $out/nix-support
       cat <<EOF > $out/nix-support/setup-hook
-      if [ -z "\$JAVA_HOME" ]; then export JAVA_HOME=$out/lib/openjdk; fi
+      if [ -z "\''${JAVA_HOME-}" ]; then export JAVA_HOME=$out/lib/openjdk; fi
       EOF
     '';