diff --git a/winbuild/MakefileBuild.vc b/winbuild/MakefileBuild.vc
index 8d942b759..2ab108cce 100644
--- a/winbuild/MakefileBuild.vc
+++ b/winbuild/MakefileBuild.vc
@@ -489,6 +489,12 @@ LIB_DIROBJ = ..\builds\$(CONFIG_NAME_LIB)-obj-lib
 CURL_DIROBJ = ..\builds\$(CONFIG_NAME_LIB)-obj-curl
 DIRDIST = ..\builds\$(CONFIG_NAME_LIB)\
 
+!IFDEF WITH_PREFIX
+DIRDIST = $(WITH_PREFIX)
+!ENDIF
+
+!MESSAGE Install directory: $(DIRDIST)
+
 #
 # curl.exe
 #