diff --git a/Makefile.in b/Makefile.in
index 24129a3..61a3952 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -44,7 +44,7 @@ PALIB = libportaudio.la
 PAINC = include/portaudio.h
 
 PA_LDFLAGS = $(LDFLAGS) $(SHARED_FLAGS) -rpath $(libdir) -no-undefined \
-	     -export-symbols-regex "(Pa|PaMacCore|PaJack|PaAlsa|PaAsio|PaOSS)_.*" \
+	     -export-symbols-regex "(Pa|PaUtil|PaMacCore|PaJack|PaAlsa|PaAsio|PaOSS)_.*" \
 	     -version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)
 
 COMMON_OBJS = \
@@ -57,6 +57,7 @@ COMMON_OBJS = \
 	src/common/pa_process.o \
 	src/common/pa_stream.o \
 	src/common/pa_trace.o \
+	src/common/pa_ringbuffer.o \
 	src/hostapi/skeleton/pa_hostapi_skeleton.o
 
 LOOPBACK_OBJS = \