diff --git a/cluster/calcium/helper.go b/cluster/calcium/helper.go
index 62a15cdba..9e1567fd7 100644
--- a/cluster/calcium/helper.go
+++ b/cluster/calcium/helper.go
@@ -91,7 +91,7 @@ func makeMountPaths(specs types.Specs, config types.Config) ([]string, map[strin
 		expanded := os.Expand(path, expandENV)
 		parts := strings.Split(expanded, ":")
 		if len(parts) == 2 {
-			binds = append(binds, fmt.Sprintf("%s:%s:ro", parts[0], parts[1]))
+			binds = append(binds, fmt.Sprintf("%s:%s:rw", parts[0], parts[1]))
 			volumes[parts[1]] = struct{}{}
 		} else if len(parts) == 3 {
 			binds = append(binds, fmt.Sprintf("%s:%s:%s", parts[0], parts[1], parts[2]))
diff --git a/cluster/calcium/helper_test.go b/cluster/calcium/helper_test.go
index 7bd5020e5..1abece42b 100644
--- a/cluster/calcium/helper_test.go
+++ b/cluster/calcium/helper_test.go
@@ -11,6 +11,6 @@ func TestMakeMountPaths(t *testing.T) {
 	config := types.Config{PermDir: "/mnt/mfs/permdirs", AppDir: "/home"}
 	specs := types.Specs{Appname: "foo", Volumes: []string{"$PERMDIR/foo-data:$APPDIR/foo-data"}}
 	binds, volumes := makeMountPaths(specs, config)
-	assert.Equal(t, binds, []string{"/mnt/mfs/permdirs/foo/foo-data:/home/foo/foo-data:ro", "/proc/sys:/writable-proc/sys:rw", "/sys/kernel/mm/transparent_hugepage:/writable-sys/kernel/mm/transparent_hugepage:rw"}, "binds should be the same")
+	assert.Equal(t, binds, []string{"/mnt/mfs/permdirs/foo/foo-data:/home/foo/foo-data:rw", "/proc/sys:/writable-proc/sys:rw", "/sys/kernel/mm/transparent_hugepage:/writable-sys/kernel/mm/transparent_hugepage:rw"}, "binds should be the same")
 	assert.Equal(t, volumes, map[string]struct{}{"/home/foo/foo-data": struct{}{}, "/writable-proc/sys": struct{}{}, "/writable-sys/kernel/mm/transparent_hugepage": struct{}{}})
 }