diff --git a/subsys/mgmt/mcumgr/grp/shell_mgmt/include/mgmt/mcumgr/grp/shell_mgmt/shell_mgmt_config.h b/subsys/mgmt/mcumgr/grp/shell_mgmt/include/mgmt/mcumgr/grp/shell_mgmt/shell_mgmt_config.h
deleted file mode 100644
index 4e3df0038c2..00000000000
--- a/subsys/mgmt/mcumgr/grp/shell_mgmt/include/mgmt/mcumgr/grp/shell_mgmt/shell_mgmt_config.h
+++ /dev/null
@@ -1,13 +0,0 @@
-/*
- * Copyright (c) 2018-2021 mcumgr authors
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#ifndef H_SHELL_MGMT_CONFIG_
-#define H_SHELL_MGMT_CONFIG_
-
-#define SHELL_MGMT_MAX_LINE_LEN     CONFIG_SHELL_CMD_BUFF_SIZE
-#define SHELL_MGMT_MAX_ARGC         CONFIG_SHELL_ARGC_MAX
-
-#endif
diff --git a/subsys/mgmt/mcumgr/grp/shell_mgmt/src/shell_mgmt.c b/subsys/mgmt/mcumgr/grp/shell_mgmt/src/shell_mgmt.c
index 7bd65ea9e74..f18537e12b1 100644
--- a/subsys/mgmt/mcumgr/grp/shell_mgmt/src/shell_mgmt.c
+++ b/subsys/mgmt/mcumgr/grp/shell_mgmt/src/shell_mgmt.c
@@ -16,8 +16,6 @@
 #include <zcbor_encode.h>
 #include <zcbor_decode.h>
 
-#include <mgmt/mcumgr/grp/shell_mgmt/shell_mgmt_config.h>
-
 static int
 shell_exec(const char *line)
 {
@@ -44,7 +42,7 @@ shell_mgmt_exec(struct smp_streamer *ctxt)
 {
 	int rc;
 	bool ok;
-	char line[SHELL_MGMT_MAX_LINE_LEN + 1];
+	char line[CONFIG_SHELL_CMD_BUFF_SIZE + 1];
 	size_t len = 0;
 	struct zcbor_string cmd_out;
 	zcbor_state_t *zsd = ctxt->reader->zs;
diff --git a/subsys/mgmt/mcumgr/grp/stat_mgmt/include/mgmt/mcumgr/grp/stat_mgmt/stat_mgmt_config.h b/subsys/mgmt/mcumgr/grp/stat_mgmt/include/mgmt/mcumgr/grp/stat_mgmt/stat_mgmt_config.h
deleted file mode 100644
index 5094f264c74..00000000000
--- a/subsys/mgmt/mcumgr/grp/stat_mgmt/include/mgmt/mcumgr/grp/stat_mgmt/stat_mgmt_config.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/*
- * Copyright (c) 2018-2021 mcumgr authors
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#ifndef H_STAT_MGMT_CONFIG_
-#define H_STAT_MGMT_CONFIG_
-
-#define STAT_MGMT_MAX_NAME_LEN  CONFIG_STAT_MGMT_MAX_NAME_LEN
-
-#endif
diff --git a/subsys/mgmt/mcumgr/grp/stat_mgmt/src/stat_mgmt.c b/subsys/mgmt/mcumgr/grp/stat_mgmt/src/stat_mgmt.c
index 153d7a45d7f..2f9f42d25f4 100644
--- a/subsys/mgmt/mcumgr/grp/stat_mgmt/src/stat_mgmt.c
+++ b/subsys/mgmt/mcumgr/grp/stat_mgmt/src/stat_mgmt.c
@@ -17,8 +17,6 @@
 #include <zephyr/mgmt/mcumgr/smp/smp.h>
 #include <zephyr/mgmt/mcumgr/grp/stat_mgmt/stat_mgmt.h>
 
-#include <mgmt/mcumgr/grp/stat_mgmt/stat_mgmt_config.h>
-
 static struct mgmt_handler stat_mgmt_handlers[];
 
 typedef int stat_mgmt_foreach_entry_fn(zcbor_state_t *zse, struct stat_mgmt_entry *entry);
@@ -120,7 +118,7 @@ stat_mgmt_show(struct smp_streamer *ctxt)
 	struct zcbor_string value = { 0 };
 	zcbor_state_t *zse = ctxt->writer->zs;
 	zcbor_state_t *zsd = ctxt->reader->zs;
-	char stat_name[STAT_MGMT_MAX_NAME_LEN];
+	char stat_name[CONFIG_STAT_MGMT_MAX_NAME_LEN];
 	bool ok;
 	size_t counter = 0;