diff --git a/pkgs/tools/filesystems/ceph/default.nix b/pkgs/tools/filesystems/ceph/default.nix
index e923bb6132e..413fc9de185 100644
--- a/pkgs/tools/filesystems/ceph/default.nix
+++ b/pkgs/tools/filesystems/ceph/default.nix
@@ -161,6 +161,7 @@ in rec {
     preConfigure =''
       substituteInPlace src/common/module.c --replace "/sbin/modinfo"  "modinfo"
       substituteInPlace src/common/module.c --replace "/sbin/modprobe" "modprobe"
+      substituteInPlace src/common/module.c --replace "/bin/grep" "grep"
 
       # for pybind/rgw to find internal dep
       export LD_LIBRARY_PATH="$PWD/build/lib''${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH"