diff --git a/src/Makefile.am b/src/Makefile.am
index 9a064d59f..ebe21d3fc 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -5,7 +5,7 @@ RIGSRC = rig.c serial.c misc.c register.c event.c cal.c conf.c tones.c \
 
 lib_LTLIBRARIES = libhamlib.la
 libhamlib_la_SOURCES = $(RIGSRC)
-libhamlib_la_LDFLAGS = $(WINLDFLAGS) -no-undefined -release @VERSION@ -version-info @ABI_VERSION@:0:0
+libhamlib_la_LDFLAGS = $(WINLDFLAGS) -no-undefined -release @VERSION@ -version-info @ABI_VERSION@:1:0
 libhamlib_la_CFLAGS = -DIN_HAMLIB $(AM_CFLAGS) -DHAMLIB_MODULE_DIR=\"$(libdir)\"
 libhamlib_la_LIBADD = @LIBLTDL@ $(top_builddir)/lib/libmisc.la @MATH_LIBS@