diff --git a/src/Makefile.am b/src/Makefile.am
index ca60332..7374e10 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,4 +1,4 @@
-SOVERSION=0:0:0		# See comments at end of file.
+SOVERSION=1:0:0		# See comments at end of file.
 
 libunwind_la_SOURCES_common =					\
 	backtrace.c get_proc_name.c				\
@@ -33,8 +33,8 @@
 	ia64/ia64-init.h ia64/offsets.h ia64/regs.h ia64/rse.h		      \
 	ia64/ucontext_i.h ia64/unwind_decoder.h ia64/unwind_i.h		      \
 									      \
-	ia64/__ia64_install_context.S ia64/global-ia64.c ia64/tables-ia64.c   \
-	ia64/get_accessors-ia64.c					      \
+	ia64/__ia64_install_context.S ia64/global-ia64.c ia64/rbs-ia64.c      \
+	ia64/tables-ia64.c ia64/get_accessors-ia64.c			      \
 	ia64/flush_cache-ia64.c ia64/set_caching_policy-ia64.c		      \
 	ia64/regname-ia64.c						      \
 									      \