diff --git a/docbook5-schemas.spec b/docbook5-schemas.spec
index cc9f5a8..544e0c4 100644
--- a/docbook5-schemas.spec
+++ b/docbook5-schemas.spec
@@ -1,6 +1,6 @@
 Name: docbook5-schemas
 Version: 5.1
-Release: 11%{?dist}
+Release: 12%{?dist}
 
 Summary: Norman Walsh's schemas (DTD, Relax NG, W3C schema) for Docbook 5.X
 
@@ -39,15 +39,30 @@ mkdir 5.1
 cd 5.0
 unzip %{SOURCE0}
 mv docbook-5.0/* .
-#Prepare docs to right place
+
+# Remove perl script
+rm tools/db4-entities.pl
+rm tools/db4-upgrade.xsl
+rmdir tools/
+
+# Remove howto docs
+rm docs/howto.html
+rm docs/howto.pdf
+rm docs/howto.xml
+rm -rf docs/images/*
+
+# Prepare docs to right place
 mv docs/ ../
 mv README ../
 mv ChangeLog ../
 cd ..
 
-#Unzip Docbook 5.1 specification
+# Unzip Docbook 5.1 specification
 cd 5.1
 unzip %{SOURCE1}
+rm tools/db4-entities.pl
+rm tools/db4-upgrade.xsl
+rmdir tools/
 mv schemas/rng .
 mv schemas/sch .
 mv schemas/catalog.xml .
@@ -246,10 +261,6 @@ mkdir -p ${DOCBOOK5DIR}/schema/dtd/5.0
 mkdir -p ${DOCBOOK5DIR}/schema/xsd/5.0
 install -m644 5.0/dtd/* ${DOCBOOK5DIR}/schema/dtd/5.0
 install -m644 5.0/xsd/* ${DOCBOOK5DIR}/schema/xsd/5.0
-mkdir -p $RPM_BUILD_ROOT%{_bindir}
-install -m755 %{version}/tools/db4-entities.pl $RPM_BUILD_ROOT%{_bindir}
-mkdir -p ${DOCBOOK5DIR}/stylesheet/upgrade
-install -m644 %{version}/tools/db4-upgrade.xsl ${DOCBOOK5DIR}/stylesheet/upgrade
 
 mkdir -p $RPM_BUILD_ROOT%{_sysconfdir}/xml
 install -m644 docbook-5.xml $RPM_BUILD_ROOT%{_sysconfdir}/xml/docbook-5.xml
@@ -320,8 +331,6 @@ fi
 %dir %{_datadir}/xml/docbook5/schema/rng
 %dir %{_datadir}/xml/docbook5/schema/sch
 %dir %{_datadir}/xml/docbook5/schema/xsd
-%dir %{_datadir}/xml/docbook5/stylesheet
-%dir %{_datadir}/xml/docbook5/stylesheet/upgrade
 # Docbook5.0
 %{_datadir}/xml/docbook5/schema/dtd/5.0
 %{_datadir}/xml/docbook5/schema/rng/5.0
@@ -330,10 +339,11 @@ fi
 # Docbook 5.1
 %{_datadir}/xml/docbook5/schema/rng/%{version}
 %{_datadir}/xml/docbook5/schema/sch/%{version}
-%{_datadir}/xml/docbook5/stylesheet/upgrade/db4-upgrade.xsl
-%{_bindir}/db4-entities.pl
 
 %changelog
+* Mon Aug 19 2024 Ales Nezbeda <anezbeda@redhat.com> - 5.1-12
+- Remove unlicensed perl script and howto docs
+
 * Mon Jun 24 2024 Troy Dawson <tdawson@redhat.com> - 5.1-11
 - Bump release for June 2024 mass rebuild