diff --git a/packaging/nsis/CMakeLists.txt b/packaging/nsis/CMakeLists.txt
index 7ad4180ec6..2dd09cff11 100644
--- a/packaging/nsis/CMakeLists.txt
+++ b/packaging/nsis/CMakeLists.txt
@@ -107,7 +107,8 @@ find_path(VCINSTALLDIR Redist PATHS
 	"[HKEY_LOCAL_MACHINE\\SOFTWARE\\WOW6432Node\\Microsoft\\VisualStudio\\SxS\\VS7;${_msvs_version}]\\VC"
 	NO_DEFAULT_PATH
 )
-message(STATUS "Using VCINSTALLDIR: ${VCINSTALLDIR}")
+file(TO_NATIVE_PATH "${VCINSTALLDIR}" VCINSTALLDIR_NATIVE)
+message(STATUS "Using VCINSTALLDIR: ${VCINSTALLDIR_NATIVE}")
 
 # Visual Studio Community 2017 version 15.7.5 uses VCRT 14.14.26405, but an
 # earlier version used 14.10.25008. Let's just glob for the right value.
diff --git a/packaging/wix/CMakeLists.txt b/packaging/wix/CMakeLists.txt
index a38d483663..cbb814ba0f 100644
--- a/packaging/wix/CMakeLists.txt
+++ b/packaging/wix/CMakeLists.txt
@@ -99,8 +99,8 @@ find_path(MERGE_MODULE_DIR ${MERGE_MODULE}
 		"$ENV{PROGRAMFILES}/Common Files/Merge Modules"
 	NO_DEFAULT_PATH
 )
-
-message(STATUS "Using ${MERGE_MODULE_DIR}/Microsoft_${MSVC_CRT_VERSION}_CRT_${TARGET_MACHINE}.msm for the WiX installer")
+file(TO_NATIVE_PATH "${MERGE_MODULE_DIR}/Microsoft_${MSVC_CRT_VERSION}_CRT_${TARGET_MACHINE}.msm" MSM_NATIVE_PATH)
+message(STATUS "Using ${MSM_NATIVE_PATH} for the WiX installer")
 
 # DependentComponents.wxi. Can be created at configure time.
 set(_all_manifest_wix "${CMAKE_CURRENT_BINARY_DIR}/DependentComponents.wxs")