1 files changed, 2 insertions, 2 deletions
diff --git a/shell.nix b/shell.nix
index d7c3b61744..8906bacfae 100644
--- a/shell.nix
+++ b/shell.nix
@@ -45,6 +45,6 @@ stdenv.mkDerivation {
     ++ lib.optional arm [ gcc-arm-embedded ]
     ++ lib.optional teensy [ teensy-loader-cli ];
 
-  CFLAGS = lib.optional avr avr_incflags;
-  ASFLAGS = lib.optional avr avr_incflags;
+  AVR_CFLAGS = lib.optional avr avr_incflags;
+  AVR_ASFLAGS = lib.optional avr avr_incflags;
 }