diff --git a/cmake/QtBuild.cmake b/cmake/QtBuild.cmake
index f56bfe5cd27..8081c7140fa 100644
--- a/cmake/QtBuild.cmake
+++ b/cmake/QtBuild.cmake
@@ -247,7 +247,7 @@ function(qt_setup_tool_path_command)
     set(bindir "${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}/${INSTALL_BINDIR}")
     file(TO_NATIVE_PATH "${bindir}" bindir)
     list(APPEND command COMMAND)
-    list(APPEND command set PATH=${bindir}$<SEMICOLON>%PATH%)
+    list(APPEND command set \"PATH=${bindir}$<SEMICOLON>%PATH%\")
     set(QT_TOOL_PATH_SETUP_COMMAND "${command}" CACHE INTERNAL "internal command prefix for tool invocations" FORCE)
 endfunction()
 qt_setup_tool_path_command()