diff --git a/libthai.spec b/libthai.spec
index f092b38..ed2e630 100644
--- a/libthai.spec
+++ b/libthai.spec
@@ -1,6 +1,6 @@
 Name:          libthai
 Version:       0.1.29
-Release:       1mamba
+Release:       2mamba
 Summary:       Thai language support routines
 Group:         System/Libraries
 Vendor:        openmamba
@@ -48,6 +48,8 @@ This package contains static libraries needed for development.
 
 %prep
 %setup -q
+echo "%{version}" > VERSION
+
 ./autogen.sh
 
 %build
@@ -89,6 +91,9 @@ rmdir %{buildroot}%{_docdir}/libthai
 %{_libdir}/libthai.*a
 
 %changelog
+* Sun Feb 26 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 0.1.29-2mamba
+- fix for empty version in pkg-config file
+
 * Mon Dec 27 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 0.1.29-1mamba
 - update to 0.1.29