diff --git a/cmake/nuttx_mkversion.cmake b/cmake/nuttx_mkversion.cmake
index 7185fdc610..4c5110b952 100644
--- a/cmake/nuttx_mkversion.cmake
+++ b/cmake/nuttx_mkversion.cmake
@@ -28,7 +28,8 @@ execute_process(
   WORKING_DIRECTORY ${NUTTX_DIR}
   ERROR_VARIABLE NUTTX_ERROR
   OUTPUT_VARIABLE NUTTX_VERSION
-  RESULT_VARIABLE VERSION_STATUS)
+  RESULT_VARIABLE VERSION_STATUS
+  OUTPUT_STRIP_TRAILING_WHITESPACE)
 
 if(${VERSION_STATUS} AND NOT ${VERSION_STATUS} EQUAL 0)
   set(NUTTX_VERSION "0.0.0")