diff --git a/pkgs/os-specific/linux/kernel/common-config.nix b/pkgs/os-specific/linux/kernel/common-config.nix
index 0c3aca17e4e..d4021e735e6 100644
--- a/pkgs/os-specific/linux/kernel/common-config.nix
+++ b/pkgs/os-specific/linux/kernel/common-config.nix
@@ -186,7 +186,7 @@ with stdenv.lib;
   BT_HCIUART_H4 y # UART (H4) protocol support
   BT_HCIUART_LL y
   BT_RFCOMM_TTY? y # RFCOMM TTY support
-  CRASH_DUMP n
+  CRASH_DUMP? n
   ${optionalString (versionOlder version "3.1") ''
     DMAR? n # experimental
   ''}