diff --git a/Makefile.in b/Makefile.in
index 87e6c7c..7d0c729 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -56,6 +56,7 @@ 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
 
 TESTS = \