diff --git a/CMakeLists.txt b/CMakeLists.txt
index 82a2b78c..eaa103d9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,19 +26,19 @@ ExternalProject_Add(cmake
 	TEST_COMMAND      \"\"
 )
 ")
-	execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
+	execute_process(COMMAND "${CMAKE_COMMAND}" -G "${CMAKE_GENERATOR}" .
 		RESULT_VARIABLE result
 		WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/cmake-download)
 	if(result)
 		message(FATAL_ERROR "CMake step for cmake failed: ${result}")
 	endif()
-	execute_process(COMMAND ${CMAKE_COMMAND} --build .
+	execute_process(COMMAND "${CMAKE_COMMAND}" --build .
 		RESULT_VARIABLE result
 		WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/cmake-download)
 	if(result)
 		message(FATAL_ERROR "Build step for cmake failed: ${result}")
 	endif()
-	install(CODE "execute_process(COMMAND ${CMAKE_COMMAND} --build \"${CMAKE_CURRENT_BINARY_DIR}/cmake-build\" --target install)")
+	install(CODE "execute_process(COMMAND \"${CMAKE_COMMAND}\" --build \"${CMAKE_CURRENT_BINARY_DIR}/cmake-build\" --target install)")
 	set(GIT_CMAKE_DIR "${CMAKE_CURRENT_BINARY_DIR}/cmake-src")
 endif()