diff --git a/src/index.js b/src/index.js
index fa49bca0..eff15b40 100644
--- a/src/index.js
+++ b/src/index.js
@@ -438,7 +438,7 @@ class CopyPlugin {
                 snapshot = await CopyPlugin.createSnapshot(
                   compilation,
                   startTime,
-                  sourceFilename
+                  absoluteFilename
                 );
               } catch (error) {
                 compilation.errors.push(error);