diff --git a/lib/Makefile.am b/lib/Makefile.am
index 31751921ca..d827a42fce 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -83,7 +83,7 @@ if CURLDEBUG
 curl_EXCLUDE += memdebug.c
 endif
 libcurl_unity.c: $(top_srcdir)/scripts/mk-unity.pl $(CSOURCES)
-	@PERL@ $(top_srcdir)/scripts/mk-unity.pl --srcdir $(srcdir) --include $(CSOURCES) --exclude $(curl_EXCLUDE) > libcurl_unity.c
+	@PERL@ $(top_srcdir)/scripts/mk-unity.pl --include $(CSOURCES) --exclude $(curl_EXCLUDE) > libcurl_unity.c
 
 nodist_libcurl_la_SOURCES = libcurl_unity.c
 libcurl_la_SOURCES = $(curl_EXCLUDE)
diff --git a/src/Makefile.am b/src/Makefile.am
index 0195c0b773..bb927680d3 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -113,7 +113,7 @@ libcurltool_la_CFLAGS =
 libcurltool_la_LDFLAGS = -static $(LINKFLAGS)
 if USE_UNITY
 libcurltool_unity.c: $(top_srcdir)/scripts/mk-unity.pl $(CURL_CFILES) $(curl_CURLX)
-	@PERL@ $(top_srcdir)/scripts/mk-unity.pl --srcdir $(srcdir) --include $(CURL_CFILES) $(curl_CURLX) > libcurltool_unity.c
+	@PERL@ $(top_srcdir)/scripts/mk-unity.pl --include $(CURL_CFILES) $(curl_CURLX) > libcurltool_unity.c
 
 nodist_libcurltool_la_SOURCES = libcurltool_unity.c
 libcurltool_la_SOURCES =