diff --git a/cluster/aws/util.sh b/cluster/aws/util.sh
index dd5a2de64be..06c2012c238 100644
--- a/cluster/aws/util.sh
+++ b/cluster/aws/util.sh
@@ -162,7 +162,7 @@ function upload-server-tars() {
   if which md5 > /dev/null 2>&1; then
     project_hash=$(md5 -q -s "${USER} ${key}")
   else
-    project_hash=$(echo -n "${USER} ${key}" | md5sum)
+    project_hash=$(echo -n "${USER} ${key}" | md5sum | awk '{ print $1 }')
   fi
   local -r staging_bucket="kubernetes-staging-${project_hash}"
 
diff --git a/cluster/gce/util.sh b/cluster/gce/util.sh
index 3427fa5697d..5dc0719991d 100755
--- a/cluster/gce/util.sh
+++ b/cluster/gce/util.sh
@@ -106,7 +106,7 @@ function upload-server-tars() {
   if which md5 > /dev/null 2>&1; then
     project_hash=$(md5 -q -s "$PROJECT")
   else
-    project_hash=$(echo -n "$PROJECT" | md5sum)
+    project_hash=$(echo -n "$PROJECT" | md5sum | awk '{ print $1 }')
   fi
   project_hash=${project_hash:0:5}