diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index fc312e664d8..e847545fe52 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,3 +1,7 @@
+2001-08-03  Richard Henderson  <rth@redhat.com>
+
+	* Makefile.in (concat.o): Depend on config.h.
+
 2001-07-30  Andreas Jaeger  <aj@suse.de>
 
 	* concat.c: Include "config.h".
diff --git a/libiberty/Makefile.in b/libiberty/Makefile.in
index 0cded6b6f65..226f7d1ca8f 100644
--- a/libiberty/Makefile.in
+++ b/libiberty/Makefile.in
@@ -260,7 +260,7 @@ argv.o: config.h $(INCDIR)/libiberty.h
 basename.o: $(INCDIR)/libiberty.h
 choose-temp.o: config.h
 clock.o: config.h
-concat.o: $(INCDIR)/libiberty.h
+concat.o: config.h $(INCDIR)/libiberty.h
 cplus-dem.o: config.h $(INCDIR)/demangle.h
 cp-demangle.o: config.h $(INCDIR)/dyn-string.h $(INCDIR)/demangle.h
 dyn-string.o: config.h $(INCDIR)/dyn-string.h