diff --git a/Makefile.in b/Makefile.in
index f35e64f4..22c6b569 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -154,7 +154,7 @@ install: all $(M4FILES) acconfig.h installdirs install-info
 	  $(INSTALL_SCRIPT) $$p $(bindir)/`echo $$p|sed '$(transform)'`; \
 	done
 	for i in $(M4FROZEN); do \
-	  $(INSTALL_DATA) $$i $(acdatadir)/$$i; \
+	  test -f $$i && $(INSTALL_DATA) $$i $(acdatadir)/$$i; \
 	done
 	for i in $(M4FILES) acconfig.h; do \
 	  $(INSTALL_DATA) $(srcdir)/$$i $(acdatadir)/$$i; \
diff --git a/doc/Makefile.in b/doc/Makefile.in
index f35e64f4..22c6b569 100644
--- a/doc/Makefile.in
+++ b/doc/Makefile.in
@@ -154,7 +154,7 @@ install: all $(M4FILES) acconfig.h installdirs install-info
 	  $(INSTALL_SCRIPT) $$p $(bindir)/`echo $$p|sed '$(transform)'`; \
 	done
 	for i in $(M4FROZEN); do \
-	  $(INSTALL_DATA) $$i $(acdatadir)/$$i; \
+	  test -f $$i && $(INSTALL_DATA) $$i $(acdatadir)/$$i; \
 	done
 	for i in $(M4FILES) acconfig.h; do \
 	  $(INSTALL_DATA) $(srcdir)/$$i $(acdatadir)/$$i; \