diff --git a/config/CONFIG.Host.WIN32 b/config/CONFIG.Host.WIN32
index b41364f33..ebe61a37e 100644
--- a/config/CONFIG.Host.WIN32
+++ b/config/CONFIG.Host.WIN32
@@ -277,7 +277,7 @@ POSIX_CPPFLAGS_YES =
 # useManifestTool.pl returns 0(don't use) or 1(use).
 #
 ifeq ($(shell $(PERL) $(EPICS_BASE_TOOLS)/useManifestTool.pl),1)
-MT_DLL_COMMAND = mt.exe /manifest $@.manifest /outputresource:$@;\#2
-MT_EXE_COMMAND = mt.exe /manifest $@.manifest /outputresource:$@;\#1
+MT_DLL_COMMAND = mt.exe /manifest $@.manifest "/outputresource:$@;\#2"
+MT_EXE_COMMAND = mt.exe /manifest $@.manifest "/outputresource:$@;\#1"
 endif