diff --git a/wdl/HardCloneWorkspace/HardCloneWorkspace.wdl b/wdl/HardCloneWorkspace/HardCloneWorkspace.wdl
index 4d8c5cbc..f035add4 100644
--- a/wdl/HardCloneWorkspace/HardCloneWorkspace.wdl
+++ b/wdl/HardCloneWorkspace/HardCloneWorkspace.wdl
@@ -36,12 +36,10 @@ workflow HardCloneTerraWorkspace {
 	}
 
 	if (rsync_workspace) {
-		String source_bucket = read_string(HardCloneTerraWorkspaceTask.src_bucket)
-		String dest_bucket = read_string(HardCloneTerraWorkspaceTask.dest_bucket)
 		call gcp_utils.GcloudRsync {
 			input:
-				source=source_bucket,
-				destination=dest_bucket
+				source=HardCloneTerraWorkspaceTask.src_bucket,
+				destination=HardCloneTerraWorkspaceTask.dest_bucket
 		}
 	}
 }
@@ -75,8 +73,8 @@ task HardCloneTerraWorkspaceTask {
 	>>>
 
 	output {
-		String dest_bucket = "dest_workspace_bucket.txt"
-		String src_bucket = "source_workspace_bucket.txt"
+		String dest_bucket = read_string("dest_workspace_bucket.txt")
+		String src_bucket = read_string("source_workspace_bucket.txt")
 	}
 
 	runtime {
diff --git a/wdl/utils/GcpUtils.wdl b/wdl/utils/GcpUtils.wdl
index 5ab2ae45..6de15a9d 100644
--- a/wdl/utils/GcpUtils.wdl
+++ b/wdl/utils/GcpUtils.wdl
@@ -11,7 +11,7 @@ task GcloudRsync {
         # Note that this is a Python regular expression, not a pure wildcard pattern. For example,
         # matching a string ending in "abc" is .*abc$ rather than *abc. Also note that the exclude path is relative,
         # as opposed to absolute (similar to Linux rsync and tar exclude options).
-        gcloud storage rsync --recursive ${source} ${destination} ${"--exclude=" + exclude_regex}
+        gcloud storage rsync --recursive ~{source} ~{destination} ~{"--exclude= " + exclude_regex}
     >>>
 
     runtime {