diff --git a/win32.mak b/win32.mak
index 0acb56d509..68cd1d761a 100644
--- a/win32.mak
+++ b/win32.mak
@@ -48,7 +48,7 @@ import:
 	"$(MAKE)" -f mak/WINDOWS import DMD="$(DMD)" HOST_DMD="$(HOST_DMD)" MODEL=32 IMPDIR="$(IMPDIR)"
 
 copydir:
-	"$(MAKE)" -f mak/WINDOWS copydir HOST_DMD="$(HOST_DMD)" MODEL=32 IMPDIR="$(IMPDIR)"
+	"$(MAKE)" -f mak/WINDOWS copydir DMD="$(DMD)" HOST_DMD="$(HOST_DMD)" MODEL=32 IMPDIR="$(IMPDIR)"
 
 copy:
 	"$(MAKE)" -f mak/WINDOWS copy DMD="$(DMD)" HOST_DMD="$(HOST_DMD)" MODEL=32 IMPDIR="$(IMPDIR)"
diff --git a/win64.mak b/win64.mak
index 505d0d93b7..a20b7d14fa 100644
--- a/win64.mak
+++ b/win64.mak
@@ -68,7 +68,7 @@ import:
 	"$(MAKE)" -f mak/WINDOWS import DMD="$(DMD)" HOST_DMD="$(HOST_DMD)" MODEL=$(MODEL) IMPDIR="$(IMPDIR)"
 
 copydir:
-	"$(MAKE)" -f mak/WINDOWS copydir HOST_DMD="$(HOST_DMD)" MODEL=$(MODEL) IMPDIR="$(IMPDIR)"
+	"$(MAKE)" -f mak/WINDOWS copydir DMD="$(DMD)" HOST_DMD="$(HOST_DMD)" MODEL=$(MODEL) IMPDIR="$(IMPDIR)"
 
 copy:
 	"$(MAKE)" -f mak/WINDOWS copy DMD="$(DMD)" HOST_DMD="$(HOST_DMD)" MODEL=$(MODEL) IMPDIR="$(IMPDIR)"