diff --git a/generate-modified-sources.sh b/generate-modified-sources.sh
new file mode 100644
index 0000000..b12059f
--- /dev/null
+++ b/generate-modified-sources.sh
@@ -0,0 +1,46 @@
+#!/bin/bash
+
+# This script downloads sources and modifies them
+
+set -ex
+
+NAME="mariadb"
+VERSION=$( rpmspec -q --srpm --qf '%{VERSION}' "${NAME}.spec" )
+# SOURCES_URL=$( spectool -s 0 "$NAME.spec" | cut -d ' ' -f 2 )
+SOURCES_URL="https://downloads.mariadb.org/interstitial/mariadb-${VERSION}/source/mariadb-${VERSION}.tar.gz"
+
+OLD_ARCHIVE_NAME="${NAME}-${VERSION}"
+NEW_ARCHIVE_NAME="${NAME}-${VERSION}-downstream_modified"
+
+# Retrieve the archive:
+
+rm -rf "./${OLD_ARCHIVE_NAME}.tar.gz" "./${OLD_ARCHIVE_NAME}/" "./${NEW_ARCHIVE_NAME}.tar.gz" "./${NEW_ARCHIVE_NAME}/"
+wget "${SOURCES_URL}"
+
+# Modify the archive:
+
+# 1/ Change both the name of the archive and the name of the base directory inside of the archive
+#    It will be necessary to change the name in the SPECfile in the %prep phase
+#    This will prevent maintainer to rebase to a non-modified sources archive without changing the SPECfile
+
+tar -xof "${OLD_ARCHIVE_NAME}.tar.gz"
+mv "${OLD_ARCHIVE_NAME}" "${NEW_ARCHIVE_NAME}"
+
+# 2/ Remove the code licensed under the PerconaFT license
+#    which was not yet reviewed as suitable for Fedora or RHEL.
+#
+#    License file:
+#      storage/tokudb/PerconaFT/PATENTS
+#
+#    The whole storage engine, which requires code under this license
+#    has to be removed before uploading sources to Fedora.
+
+rm -r "${NEW_ARCHIVE_NAME}/storage/tokudb"
+
+# Pack the extracted files back to the archive
+
+tar -czf "${NEW_ARCHIVE_NAME}.tar.gz" "${NEW_ARCHIVE_NAME}"
+
+# Remove the decompressed original used to create the archive
+
+rm -r "./${NEW_ARCHIVE_NAME}/"
diff --git a/mariadb.spec b/mariadb.spec
index 1f7d824..6446135 100644
--- a/mariadb.spec
+++ b/mariadb.spec
@@ -168,7 +168,12 @@ Summary:          A very fast and robust SQL database server
 URL:              http://mariadb.org
 License:          GPLv2 and LGPLv2
 
-Source0:          https://downloads.mariadb.org/interstitial/mariadb-%{version}/source/mariadb-%{version}.tar.gz
+# Original upstream sources archive URL
+# Source0:          https://downloads.mariadb.org/interstitial/mariadb-%{version}/source/mariadb-%{version}.tar.gz
+# Non-existent URL containing correct archive name
+#   The archive was created by executing the "generate-modified-sources.sh" script
+Source0:          https://fedoraproject.org/mariadb-%{version}-downstream_modified.tar.gz
+
 Source2:          mysql_config_multilib.sh
 Source3:          my.cnf.in
 Source6:          README.mariadb-docs
@@ -744,7 +749,7 @@ sources.
 
 
 %prep
-%setup -q -n mariadb-%{version}
+%setup -q -n mariadb-%{version}-downstream_modified
 
 # Remove JAR files that upstream puts into tarball
 find . -name "*.jar" -type f -exec rm --verbose -f {} \;