diff --git a/Makefile.am b/Makefile.am
index 5c30e0fb..7ec4b047 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -37,7 +37,7 @@ dist-hook: ChangeLog
 	@echo "Checking whether included libopts matches the system's. If the"
 	@echo "check fails upgrade the included libopts."
 	@echo "*****************************************************************"
-	test "`autoopts-config libsrc|cut -d '-' -f 2|sed 's/.tar.gz//'`" = "`cat libopts/autoopts/options.h |grep OPTIONS_VERSION_STRING|cut -d '"' -f 2|sed 's/:/./g'`"
+	test "`autoopts-config libsrc|cut -d '-' -f 2|sed 's/.tar.gz//'`" = "`cat $(srcdir)/libopts/autoopts/options.h |grep OPTIONS_VERSION_STRING|cut -d '"' -f 2|sed 's/:/./g'`"
 	cd $(distdir)/src/ && for i in ocserv-args.def ocpasswd-args.def;do \
 		$(AUTOGEN) $$i; \
 	done