diff --git a/src/ncp/CMakeLists.txt b/src/ncp/CMakeLists.txt
index 0ff1ad369..8c0134afe 100644
--- a/src/ncp/CMakeLists.txt
+++ b/src/ncp/CMakeLists.txt
@@ -35,8 +35,6 @@ set(COMMON_SOURCES
     changed_props_set.cpp
     ncp_base.cpp
     ncp_base_dispatcher.cpp
-    ncp_base_ftd.cpp
-    ncp_base_mtd.cpp
     ncp_base_radio.cpp
     ncp_spi.cpp
     ncp_uart.cpp
@@ -48,6 +46,12 @@ if(OT_NCP_VENDOR_HOOK_SOURCE)
     list(APPEND COMMON_SOURCES ${OT_NCP_VENDOR_HOOK_SOURCE_DIR}${OT_NCP_VENDOR_HOOK_SOURCE})
 endif()
 
+set(COMMON_NCP_SOURCES
+    ${COMMON_SOURCES}
+    ncp_base_ftd.cpp
+    ncp_base_mtd.cpp
+)
+
 if(OT_FTD)
     include(ftd.cmake)
 endif()
diff --git a/src/ncp/ftd.cmake b/src/ncp/ftd.cmake
index f24413447..afa685ca4 100644
--- a/src/ncp/ftd.cmake
+++ b/src/ncp/ftd.cmake
@@ -46,7 +46,7 @@ target_compile_options(openthread-ncp-ftd PRIVATE
 
 target_include_directories(openthread-ncp-ftd PUBLIC ${OT_PUBLIC_INCLUDES} PRIVATE ${COMMON_INCLUDES})
 
-target_sources(openthread-ncp-ftd PRIVATE ${COMMON_SOURCES})
+target_sources(openthread-ncp-ftd PRIVATE ${COMMON_NCP_SOURCES})
 target_include_directories(openthread-ncp-ftd PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
 
 target_link_libraries(openthread-ncp-ftd
diff --git a/src/ncp/mtd.cmake b/src/ncp/mtd.cmake
index bdf330afd..aa4f274b3 100644
--- a/src/ncp/mtd.cmake
+++ b/src/ncp/mtd.cmake
@@ -46,7 +46,7 @@ target_compile_options(openthread-ncp-mtd PRIVATE
 
 target_include_directories(openthread-ncp-mtd PUBLIC ${OT_PUBLIC_INCLUDES} PRIVATE ${COMMON_INCLUDES})
 
-target_sources(openthread-ncp-mtd PRIVATE ${COMMON_SOURCES})
+target_sources(openthread-ncp-mtd PRIVATE ${COMMON_NCP_SOURCES})
 target_include_directories(openthread-ncp-mtd PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
 
 target_link_libraries(openthread-ncp-mtd
diff --git a/src/ncp/radio.cmake b/src/ncp/radio.cmake
index e3e74b555..212a8c082 100644
--- a/src/ncp/radio.cmake
+++ b/src/ncp/radio.cmake
@@ -46,14 +46,8 @@ target_compile_options(openthread-rcp PRIVATE
 
 target_include_directories(openthread-rcp PUBLIC ${OT_PUBLIC_INCLUDES} PRIVATE ${COMMON_INCLUDES})
 
-target_sources(openthread-rcp PRIVATE
-    changed_props_set.cpp
-    ncp_base.cpp
-    ncp_base_dispatcher.cpp
-    ncp_base_radio.cpp
-    ncp_spi.cpp
-    ncp_uart.cpp
-)
+target_sources(openthread-rcp PRIVATE ${COMMON_SOURCES})
+target_include_directories(openthread-rcp PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
 
 target_link_libraries(openthread-rcp
     PUBLIC