diff --git a/tools/compliance/readgraph_test.go b/tools/compliance/readgraph_test.go
index 6ff7a6c..db52fb1 100644
--- a/tools/compliance/readgraph_test.go
+++ b/tools/compliance/readgraph_test.go
@@ -88,9 +88,9 @@
 			lg, err := ReadLicenseGraph(tt.fs, stderr, tt.roots)
 			if err != nil {
 				if len(tt.expectedError) == 0 {
-					t.Errorf("unexpected error: got %w, want no error", err)
+					t.Errorf("unexpected error: got %s, want no error", err)
 				} else if !strings.Contains(err.Error(), tt.expectedError) {
-					t.Errorf("unexpected error: got %w, want %q", err, tt.expectedError)
+					t.Errorf("unexpected error: got %s, want %q", err, tt.expectedError)
 				}
 				return
 			}