diff --git a/module/accel/idxd/accel_engine_idxd.c b/module/accel/idxd/accel_engine_idxd.c
index 4db66a244..9713483a3 100644
--- a/module/accel/idxd/accel_engine_idxd.c
+++ b/module/accel/idxd/accel_engine_idxd.c
@@ -452,7 +452,7 @@ accel_engine_idxd_write_config_json(struct spdk_json_write_ctx *w)
 		spdk_json_write_object_begin(w);
 		spdk_json_write_named_string(w, "method", "idxd_scan_accel_engine");
 		spdk_json_write_named_object_begin(w, "params");
-		spdk_json_write_named_uint32(w, "config_kernel_mode", g_kernel_mode);
+		spdk_json_write_named_bool(w, "config_kernel_mode", g_kernel_mode);
 		spdk_json_write_object_end(w);
 		spdk_json_write_object_end(w);
 	}