diff --git a/libopenjpeg/openjpeg.def.in b/libopenjpeg/openjpeg.def.in
index 85cdd94a..8a86443b 100644
--- a/libopenjpeg/openjpeg.def.in
+++ b/libopenjpeg/openjpeg.def.in
@@ -1,4 +1,12 @@
+; This file was generated by CMake (http://cmake.org)
+; Please see openjpeg/libopenjpeg/CMakeLists.txt and
+; openjpeg/libopenjpeg/openjpeg.def.in for more
+; information
+
 LIBRARY openjpeg.dll
+
+VERSION @OPENJPEG_MAJOR_VERSION@.@OPENJPEG_MINOR_VERSION@
+
 EXPORTS @UNDERSCORE@opj_image_create
         @UNDERSCORE@opj_image_destroy
         @UNDERSCORE@opj_cio_open