diff --git a/langpacks.spec b/langpacks.spec
index f17b399..e928161 100644
--- a/langpacks.spec
+++ b/langpacks.spec
@@ -1,6 +1,6 @@
 Name:          langpacks
 Version:       4.1
-Release:       2mamba
+Release:       3mamba
 Summary:       Langpacks meta-package
 Group:         System/Internationalization
 Vendor:        openmamba
@@ -28,7 +28,7 @@ This package provides %{2} langpacks meta-package.\
 %post %{1}\
 if [ $1 -ge 1 ]; then\
    l=`echo %{1}|cut -d_ -f1`\
-   sed -i "s|^#\\(%{l}_.* UTF-8\\)|\\1|" /etc/locale.gen\
+   sed -i "s|^#\\(${l}_.* UTF-8\\)|\\1|" /etc/locale.gen\
    locale-gen\
 fi\
 :\
@@ -36,7 +36,7 @@ fi\
 %postun %{1}\
 if [ $1 -eq 0 ]; then\
    l=`echo %{1}|cut -d_ -f1`\
-   sed -i "s|^\\(%{l}_.* UTF-8\\)|#\\1|" /etc/locale.gen\
+   sed -i "s|^\\(${l}_.* UTF-8\\)|#\\1|" /etc/locale.gen\
    locale-gen\
 fi\
 :\
@@ -149,6 +149,9 @@ DESTDIR=%{buildroot} appstream-util split-appstream %{SOURCE0}
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 
 %changelog
+* Thu Oct 17 2024 Silvan Calarco <silvan.calarco@mambasoft.it> 4.1-3mamba
+- fix a mistake in locale.gen editing
+
 * Wed Oct 16 2024 Silvan Calarco <silvan.calarco@mambasoft.it> 4.1-2mamba
 - configure glibc locales for langpack language in post scripts