diff --git a/dexpreopt/class_loader_context.go b/dexpreopt/class_loader_context.go
index 57c7ae8..af1d33d 100644
--- a/dexpreopt/class_loader_context.go
+++ b/dexpreopt/class_loader_context.go
@@ -323,6 +323,7 @@
 		} else if clc.Host == hostPath && clc.Device == devicePath {
 			// Ok, the same library with the same paths. Don't re-add it, but don't raise an error
 			// either, as the same library may be reachable via different transitional dependencies.
+			clc.Optional = clc.Optional && optional
 			return nil
 		} else {
 			// Fail, as someone is trying to add the same library with different paths. This likely