diff --git a/sbt/sbt b/sbt/sbt
index 62ead8a69dbf69d21ee4b5a5e3fa9dcc86006451..8472dce589bccee262774f3e59a2c37300dfa0d3 100755
--- a/sbt/sbt
+++ b/sbt/sbt
@@ -29,10 +29,11 @@ JAR=sbt/sbt-launch-${SBT_VERSION}.jar
 if [ ! -f ${JAR} ]; then
   # Download
   printf "Attempting to fetch sbt\n"
+  JAR_DL=${JAR}.part
   if hash curl 2>/dev/null; then
-    curl --progress-bar ${URL1} > ${JAR} || curl --progress-bar ${URL2} > ${JAR}
+    (curl --progress-bar ${URL1} > ${JAR_DL} || curl --progress-bar ${URL2} > ${JAR_DL}) && mv ${JAR_DL} ${JAR}
   elif hash wget 2>/dev/null; then
-    wget --progress=bar ${URL1} -O ${JAR} || wget --progress=bar ${URL2} -O ${JAR}
+    (wget --progress=bar ${URL1} -O ${JAR_DL} || wget --progress=bar ${URL2} -O ${JAR_DL}) && mv ${JAR_DL} ${JAR}
   else
     printf "You do not have curl or wget installed, please install sbt manually from http://www.scala-sbt.org/\n"
     exit -1