diff --git a/libqpdf.map.in b/libqpdf.map.in
index 9d4e8b9..50d776f 100644
--- a/libqpdf.map.in
+++ b/libqpdf.map.in
@@ -1,4 +1,4 @@
-LIBQPDF_@LT_SONAME@ {
+LIBQPDF_@qpdf_SOVERSION@ {
   global:
     *;
 };