diff --git a/sdk/testing.go b/sdk/testing.go
index 362a352..14a397c 100644
--- a/sdk/testing.go
+++ b/sdk/testing.go
@@ -348,14 +348,15 @@
 	}
 }
 
-// Check that the specified path is in the list of zips to merge with the intermediate zip.
-func checkMergeZip(expected string) snapshotBuildInfoChecker {
+// Check that the specified paths match the list of zips to merge with the intermediate zip.
+func checkMergeZips(expected ...string) snapshotBuildInfoChecker {
 	return func(info *snapshotBuildInfo) {
 		info.r.t.Helper()
 		if info.intermediateZip == "" {
 			info.r.t.Errorf("No intermediate zip file was created")
 		}
-		ensureListContains(info.r.t, info.mergeZips, expected)
+
+		info.r.AssertDeepEquals("mismatching merge zip files", expected, info.mergeZips)
 	}
 }