diff --git a/nix/frama-ci.nix b/nix/frama-ci.nix
index 909462036c40f914941b4e6754983396dcda5760..750822f21d30a4f337bc4fbbccf3b823caeb5d43 100644
--- a/nix/frama-ci.nix
+++ b/nix/frama-ci.nix
@@ -5,7 +5,7 @@ let
     src = builtins.fetchGit {
             "url" = "https://bobot:${password}@git.frama-c.com/frama-c/Frama-CI.git";
             "name" = "Frama-CI";
-            "rev" = "95e05a8778f3c2970cc0dfba8032ed5d445951be";
+            "rev" = "302db8051e232afb288a29ea1c91cc7a17fe9d85";
             "ref" = "fix/interface-files";
     };
     pkgs = import "${src}/pkgs.nix" {};
diff --git a/nix/frama-ci.sh b/nix/frama-ci.sh
index 1a65c0893800cdc9e9f013ef466930984455efaa..b4deee0abc1543e01c82d3c6c92d9b0045b26d77 100755
--- a/nix/frama-ci.sh
+++ b/nix/frama-ci.sh
@@ -8,5 +8,5 @@ export FRAMA_CI=$(nix-instantiate --eval -E "((import <nixos-20.03> {}).callPack
 FRAMA_CI=${FRAMA_CI#\"}
 FRAMA_CI=${FRAMA_CI%\"}
 
-export NIX_PATH=nixpkgs=$(eval echo $(nix-instantiate --eval -E "with import $FRAMA_CI/pkgs-ref.nix; url"))
+export NIX_PATH="nixpkgs=$(eval echo $(nix-instantiate --eval -E "with import $FRAMA_CI/pkgs-ref.nix; url"))"
 $FRAMA_CI/compile.sh $@