diff --git a/config.make.in b/config.make.in
index c35936a0ce06522f47a2f729cff79e861cc87d68..152b42e57eb94f10eb69d805ff60d0857f105383 100644
--- a/config.make.in
+++ b/config.make.in
@@ -28,6 +28,7 @@ SHLIBCFLAGS = @SHLIBCFLAGS@
 
 LIBNETTLE_MAJOR = @LIBNETTLE_MAJOR@
 LIBNETTLE_MINOR = @LIBNETTLE_MINOR@
+LIBNETTLE_SONAME = @LIBNETTLE_SONAME@
 LIBNETTLE_FILE = @LIBNETTLE_FILE@
 LIBNETTLE_FORLINK = @LIBNETTLE_FORLINK@
 LIBNETTLE_LIBS = @LIBNETTLE_LIBS@
@@ -35,6 +36,7 @@ LIBNETTLE_LINK = @LIBNETTLE_LINK@
 
 LIBHOGWEED_MAJOR = @LIBHOGWEED_MAJOR@
 LIBHOGWEED_MINOR = @LIBHOGWEED_MINOR@
+LIBHOGWEED_SONAME = @LIBHOGWEED_SONAME@
 LIBHOGWEED_FILE = @LIBHOGWEED_FILE@
 LIBHOGWEED_FORLINK = @LIBHOGWEED_FORLINK@
 LIBHOGWEED_LIBS = @LIBHOGWEED_LIBS@