diff --git a/kernel/Makefile b/kernel/Makefile
index 352dbee..2a0b900 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -33,7 +33,7 @@ format:
 		':!uACPI/tests/**' \
 		':!libk/printf*' \
 		':!lz4/lz4*' \
-		':!device/pci_defs.c' \
+		':!device/pci/pci_defs.c' \
 		':!mm/malloc*')
 
 .PHONY: all clean format