diff --git a/create_linux_installer.sh b/create_linux_installer.sh
index 29958882..86139106 100755
--- a/create_linux_installer.sh
+++ b/create_linux_installer.sh
@@ -9,14 +9,7 @@ cd ..
 python3 build/replace_versions.py
 
 ./switch_build.sh client
-
-if [ ! -e cryptoplugin/cryptopp563.zip ]
-then
-	wget https://www.cryptopp.com/cryptopp563.zip -O cryptoplugin/cryptopp563.zip
-	cd cryptoplugin
-	unzip cryptopp563.zip
-	cd ..
-fi
+./download_cryptopp.sh
 
 autoreconf --install
 
diff --git a/download_cryptopp.sh b/download_cryptopp.sh
index 3a85ef81..453b1f8a 100755
--- a/download_cryptopp.sh
+++ b/download_cryptopp.sh
@@ -5,13 +5,27 @@ set -e
 CRYPTOPP_NAME="cryptopp565.zip"
 EXPECTED_SHA256="a75ef486fe3128008bbb201efee3dcdcffbe791120952910883b26337ec32c34"
 
+DOWNLOAD_CRYPTOPP=1
 cd cryptoplugin
-wget http://buildserver.urbackup.org/$CRYPTOPP_NAME -O $CRYPTOPP_NAME
-SHASUM=`sha256sum $CRYPTOPP_NAME | cut -d" " -f1`
-if [ $SHASUM != $EXPECTED_SHA256 ]
+if [ -e $CRYPTOPP_NAME ]
 then
-	echo "SHASUM of $CRYPTOPP_NAME is wrong: got $SHASUM expected $EXPECTED_SHA256"
-	exit 1
+	SHASUM=`sha256sum $CRYPTOPP_NAME | cut -d" " -f1`
+	if [ $SHASUM = $EXPECTED_SHA256 ]
+	then
+		DOWNLOAD_CRYPTOPP=0
+	fi
 fi
-unzip $CRYPTOPP_NAME
+
+if [ $DOWNLOAD_CRYPTOPP = 1 ]
+then
+	wget http://buildserver.urbackup.org/$CRYPTOPP_NAME -O $CRYPTOPP_NAME
+	SHASUM=`sha256sum $CRYPTOPP_NAME | cut -d" " -f1`
+	if [ $SHASUM != $EXPECTED_SHA256 ]
+	then
+		echo "SHASUM of $CRYPTOPP_NAME is wrong: got $SHASUM expected $EXPECTED_SHA256"
+		exit 1
+	fi
+	unzip $CRYPTOPP_NAME
+fi
+
 cd ..