diff --git a/Makefile b/Makefile
index cc0ba7a..24e361f 100644
--- a/Makefile
+++ b/Makefile
@@ -115,7 +115,7 @@ $(LIBGRAY).a: $(LIBGRAY).a($(MODULES))
 # All documentation
 docs: | $(SHAREDIR)
 	+make -C doc
-	cp -t $(SHAREDIR) -r doc/build/*
+	cp -r doc/build/* $(SHAREDIR)
 
 # Generated man pages
 $(SHAREDIR)/gray.1: $(GRAY) doc/gray.1 | $(SHAREDIR)