diff --git a/.travis.yml b/.travis.yml
index f277585b9..dc2cefdcb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,6 @@
 language: perl
 before_install:
-- openssl aes-256-cbc -K $encrypted_daaf322d08bf_key -iv $encrypted_daaf322d08bf_iv
-  -in $TRAVIS_BUILD_DIR/package/deploy/slic3r-upload.rsa.enc -out ~/slic3r-upload.rsa
-  -d
-- chmod 600 ~/slic3r-upload.rsa
+- sh package/linux/travis-decrypt-key
 install:
 - export LDLOADLIBS=-lstdc++
 - export BOOST_DIR=$HOME/boost_1_63_0
diff --git a/appveyor.yml b/appveyor.yml
index 23289e5ce..701f5ca6c 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -16,8 +16,8 @@ environment:
     secure: fYPwnI3p6HNR+eMRJR3JfmyNolFn+Uc0MUn2bBXp9uU=
 
 install:
-  - nuget install secure-file -ExcludeVersion
-  - secure-file\tools\secure-file -decrypt package/deploy/slic3r-upload.ppk.enc -secret %ENC_SECRET%
+  - IF DEFINED ENC_SECRET nuget install secure-file -ExcludeVersion
+  - IF DEFINED ENC_SECRET secure-file\tools\secure-file -decrypt package/deploy/slic3r-upload.ppk.enc -secret %ENC_SECRET%
   - ps: "& package/win/appveyor_preinstall.ps1"
 cache:
 - C:\Users\appveyor\boost.1.63.0.7z
diff --git a/package/deploy/sftp.sh b/package/deploy/sftp.sh
index 2ef0d48a3..c69e177d0 100755
--- a/package/deploy/sftp.sh
+++ b/package/deploy/sftp.sh
@@ -10,7 +10,11 @@ KEY=$1
 shift
 FILES=$*
 
-for i in $FILES; do 
-     filepath=$(readlink -f "$i")
-     echo put $filepath | sftp -i$KEY "${UPLOAD_USER}@dl.slic3r.org:$DIR/"
-done
+if [ -s $KEY ]; then
+    for i in $FILES; do 
+         filepath=$(readlink -f "$i")
+         echo put $filepath | sftp -i$KEY "${UPLOAD_USER}@dl.slic3r.org:$DIR/"
+    done
+else
+    echo "$KEY is not available, not deploying." 
+fi
diff --git a/package/deploy/winscp.ps1 b/package/deploy/winscp.ps1
index 20dc034ac..af8fc407a 100755
--- a/package/deploy/winscp.ps1
+++ b/package/deploy/winscp.ps1
@@ -10,4 +10,6 @@ Param(
 )
 Set-Variable -Name "UUSER" -Value "$env:UPLOAD_USER"
 Set-Variable -Name "UPLOAD" -Value "$($FILE | Resolve-Path)"
-winscp.com /privatekey=$KEY /command "open sftp://$UUSER@dl.slic3r.org/$DIR -hostkey=*" "put $UPLOAD ./$FILE" "exit"
+if (Test-Path $KEY) {
+    winscp.com /privatekey=$KEY /command "open sftp://$UUSER@dl.slic3r.org/$DIR -hostkey=*" "put $UPLOAD ./$FILE" "exit"
+}
diff --git a/package/linux/travis-decrypt-key b/package/linux/travis-decrypt-key
new file mode 100644
index 000000000..cfc6bc911
--- /dev/null
+++ b/package/linux/travis-decrypt-key
@@ -0,0 +1,7 @@
+#!/bin/bash
+# Script to only decrypt if it is available
+
+if [ ! -z ${encrypted_daaf322d08bf_key+x} ]; then
+    openssl aes-256-cbc -K $encrypted_daaf322d08bf_key -iv $encrypted_daaf322d08bf_iv -in $TRAVIS_BUILD_DIR/package/deploy/slic3r-upload.rsa.enc -out ~/slic3r-upload.rsa -d
+    chmod 600 ~/slic3r-upload.rsa
+fi