diff --git a/src/Makefile.am b/src/Makefile.am
index af01dc1..1c24027 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,6 +1,7 @@
 lib_LTLIBRARIES = libr3.la
 # lib_LIBRARIES = libr3.a
 libr3_la_SOURCES = node.c edge.c list.c str.c token.c
+libr3_la_LDFLAGS = -export-symbols-regex '^r3_'
 
 libr3_la_LIBADD=$(DEPS_LIBS)
 AM_CFLAGS=$(DEPS_CFLAGS) -I$(top_builddir) -I$(top_builddir)/include -Wall