diff --git a/c++/Makefile.am b/c++/Makefile.am
index 480987d87..3e7590871 100644
--- a/c++/Makefile.am
+++ b/c++/Makefile.am
@@ -1,7 +1,7 @@
 
 lib_LTLIBRARIES = libhamlib++.la
 libhamlib___la_SOURCES = rigclass.cc rotclass.cc
-libhamlib___la_LDFLAGS = -no-undefined -version-info @ABI_VERSION@:5:0
+libhamlib___la_LDFLAGS = -no-undefined -version-info @ABI_VERSION@:14:0
 libhamlib___la_LIBADD = $(top_builddir)/src/libhamlib.la
 
 check_PROGRAMS = testcpp