diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index aecab41eeb8..009b733092d 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -1590,7 +1590,6 @@ HFILES_WITH_SRCDIR = \
 
 DEPFILES = $(TARGET_OBS) $(SER_HARDWIRE) $(NATDEPFILES) $(SIM_OBS)
 
-SOURCES = $(SFILES) $(ALLDEPFILES) $(YYFILES) $(CONFIG_SRCS)
 # Don't include YYFILES (*.c) because we already include *.y in SFILES,
 # and it's more useful to see it in the .y file.
 TAGFILES_NO_SRCDIR = $(SFILES) $(HFILES_NO_SRCDIR) $(ALLDEPFILES) \