diff --git a/Makefile.in b/Makefile.in
index d66542702..e7dabd928 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -353,7 +353,7 @@ uninstall:
 	    do rm -f "$(DESTDIR)$(bindir)/$$f"; done
 	for f in ivl_target.h vpi_user.h _pli_types.h acc_user.h veriuser.h; \
 	    do rm -f "$(DESTDIR)$(includedir)/$$f"; done
-	-test X$(suffix) = X || rmdir "$(DESTDIR)/$(includedir)"
+	-test X$(suffix) = X || rmdir "$(DESTDIR)$(includedir)"
 	rm -f "$(DESTDIR)$(mandir)/man1/iverilog-vpi$(suffix).1" "$(DESTDIR)$(prefix)/iverilog-vpi$(suffix).pdf"