diff --git a/components/freemodbus/tcp_master/modbus_controller/mbc_tcp_master.c b/components/freemodbus/tcp_master/modbus_controller/mbc_tcp_master.c
index ab8964e5cc..41b436f974 100644
--- a/components/freemodbus/tcp_master/modbus_controller/mbc_tcp_master.c
+++ b/components/freemodbus/tcp_master/modbus_controller/mbc_tcp_master.c
@@ -33,6 +33,8 @@
 #include "mbc_tcp_master.h"         // for tcp master create function and types
 #include "port_tcp_master.h"        // for tcp master port defines and types
 
+#if MB_MASTER_TCP_ENABLED
+
 /*-----------------------Master mode use these variables----------------------*/
 
 // The response time is average processing time + data transmission
@@ -714,3 +716,5 @@ esp_err_t mbc_tcp_master_create(void** handler)
 
     return ESP_OK;
 }
+
+#endif //#if MB_MASTER_TCP_ENABLED
diff --git a/components/freemodbus/tcp_master/port/port_tcp_master.c b/components/freemodbus/tcp_master/port/port_tcp_master.c
index 2c72882e16..99879c81ea 100644
--- a/components/freemodbus/tcp_master/port/port_tcp_master.c
+++ b/components/freemodbus/tcp_master/port/port_tcp_master.c
@@ -52,6 +52,8 @@
 #include "mbframe.h"
 #include "port_tcp_master.h"
 
+#if MB_MASTER_TCP_ENABLED
+
 /* ----------------------- Defines  -----------------------------------------*/
 #define MB_TCP_CONNECTION_TIMEOUT_MS    ( 20 )      // Connection timeout in mS
 #define MB_TCP_RECONNECT_TIMEOUT        ( 5000000 ) // Connection timeout in uS
@@ -945,3 +947,5 @@ xMBMasterTCPTimerExpired(void)
 
     return xNeedPoll;
 }
+
+#endif //#if MB_MASTER_TCP_ENABLED
diff --git a/components/freemodbus/tcp_slave/modbus_controller/mbc_tcp_slave.c b/components/freemodbus/tcp_slave/modbus_controller/mbc_tcp_slave.c
index 3b39e4e47d..e02a24a064 100644
--- a/components/freemodbus/tcp_slave/modbus_controller/mbc_tcp_slave.c
+++ b/components/freemodbus/tcp_slave/modbus_controller/mbc_tcp_slave.c
@@ -28,6 +28,8 @@
 #include "mbc_tcp_slave.h"          // for tcp slave mb controller defines
 #include "port_tcp_slave.h"         // for tcp slave port defines
 
+#if MB_TCP_ENABLED
+
 // Shared pointer to interface structure
 static mb_slave_interface_t* mbs_interface_ptr = NULL;
 
@@ -221,3 +223,5 @@ esp_err_t mbc_tcp_slave_create(void** handler)
 
     return ESP_OK;
 }
+
+#endif //#if MB_TCP_ENABLED
diff --git a/components/freemodbus/tcp_slave/port/port_tcp_slave.c b/components/freemodbus/tcp_slave/port/port_tcp_slave.c
index d5d83e7fef..3c4df63cf8 100644
--- a/components/freemodbus/tcp_slave/port/port_tcp_slave.c
+++ b/components/freemodbus/tcp_slave/port/port_tcp_slave.c
@@ -55,6 +55,8 @@
 #include "port_tcp_slave.h"
 #include "esp_modbus_common.h"      // for common types for network options
 
+#if MB_TCP_ENABLED
+
 /* ----------------------- Defines  -----------------------------------------*/
 #define MB_TCP_DISCONNECT_TIMEOUT       ( CONFIG_FMB_TCP_CONNECTION_TOUT_SEC * 1000000 ) // disconnect timeout in uS
 #define MB_TCP_RESP_TIMEOUT_MS          ( MB_MASTER_TIMEOUT_MS_RESPOND - 2 ) // slave response time limit
@@ -728,3 +730,5 @@ xMBTCPPortSendResponse( UCHAR * pucMBTCPFrame, USHORT usTCPLength )
     }
     return bFrameSent;
 }
+
+#endif //#if MB_TCP_ENABLED