diff --git a/build/rpm/dolibarr_fedora.spec b/build/rpm/dolibarr_fedora.spec
index c4ef57aeec5..72a06e65304 100755
--- a/build/rpm/dolibarr_fedora.spec
+++ b/build/rpm/dolibarr_fedora.spec
@@ -109,8 +109,12 @@ for i in $RPM_BUILD_ROOT%{_datadir}/%{name}/htdocs/langs/*_*
 do
   lang=$(basename $i)
   lang1=`expr substr $lang 1 2`; 
-  lang2=`expr substr $lang 4 2`; 
-  echo "%lang(${lang1}) %{_datadir}/%{name}/htdocs/langs/${lang}/*.lang"
+  lang2=`expr substr $lang 4 2 | tr "[:upper:]" "[:lower:]"`; 
+  if [ "$lang1" = "$lang2" ] ; then
+	echo "%lang(${lang1}) %{_datadir}/%{name}/htdocs/langs/${lang}/*.lang"
+  else
+	echo "%lang(${lang}) %{_datadir}/%{name}/htdocs/langs/${lang}/*.lang"
+  fi
 done >%{name}.lang
 
 
diff --git a/build/rpm/dolibarr_generic.spec b/build/rpm/dolibarr_generic.spec
index b96ff89a53d..827e8e53603 100755
--- a/build/rpm/dolibarr_generic.spec
+++ b/build/rpm/dolibarr_generic.spec
@@ -108,8 +108,12 @@ for i in $RPM_BUILD_ROOT%{_datadir}/%{name}/htdocs/langs/*_*
 do
   lang=$(basename $i)
   lang1=`expr substr $lang 1 2`; 
-  lang2=`expr substr $lang 4 2`; 
-  echo "%lang(${lang1}) %{_datadir}/%{name}/htdocs/langs/${lang}"
+  lang2=`expr substr $lang 4 2 | tr "[:upper:]" "[:lower:]"`; 
+  if [ "$lang1" = "$lang2" ] ; then
+	echo "%lang(${lang1}) %{_datadir}/%{name}/htdocs/langs/${lang}/*.lang"
+  else
+	echo "%lang(${lang}) %{_datadir}/%{name}/htdocs/langs/${lang}/*.lang"
+  fi
 done >%{name}.lang
 
 
diff --git a/build/rpm/dolibarr_mandriva.spec b/build/rpm/dolibarr_mandriva.spec
index 926f13c97d1..834be2acf77 100755
--- a/build/rpm/dolibarr_mandriva.spec
+++ b/build/rpm/dolibarr_mandriva.spec
@@ -108,8 +108,12 @@ for i in $RPM_BUILD_ROOT%{_datadir}/%{name}/htdocs/langs/*_*
 do
   lang=$(basename $i)
   lang1=`expr substr $lang 1 2`; 
-  lang2=`expr substr $lang 4 2`; 
-  echo "%lang(${lang1}) %{_datadir}/%{name}/htdocs/langs/${lang}"
+  lang2=`expr substr $lang 4 2 | tr "[:upper:]" "[:lower:]"`; 
+  if [ "$lang1" = "$lang2" ] ; then
+	echo "%lang(${lang1}) %{_datadir}/%{name}/htdocs/langs/${lang}/*.lang"
+  else
+	echo "%lang(${lang}) %{_datadir}/%{name}/htdocs/langs/${lang}/*.lang"
+  fi
 done >%{name}.lang
 
 
diff --git a/build/rpm/dolibarr_opensuse.spec b/build/rpm/dolibarr_opensuse.spec
index e6a55fbd16f..ec7ebcf9ee7 100755
--- a/build/rpm/dolibarr_opensuse.spec
+++ b/build/rpm/dolibarr_opensuse.spec
@@ -106,8 +106,12 @@ for i in $RPM_BUILD_ROOT%{_datadir}/%{name}/htdocs/langs/*_*
 do
   lang=$(basename $i)
   lang1=`expr substr $lang 1 2`; 
-  lang2=`expr substr $lang 4 2`; 
-  echo "%lang(${lang1}) %{_datadir}/%{name}/htdocs/langs/${lang}"
+  lang2=`expr substr $lang 4 2 | tr "[:upper:]" "[:lower:]"`; 
+  if [ "$lang1" = "$lang2" ] ; then
+	echo "%lang(${lang1}) %{_datadir}/%{name}/htdocs/langs/${lang}/*.lang"
+  else
+	echo "%lang(${lang}) %{_datadir}/%{name}/htdocs/langs/${lang}/*.lang"
+  fi
 done >%{name}.lang
 
 # Enable this command to tag desktop file for suse