diff --git a/p3/data.go b/p3/data.go
index 81938a5..0da0df9 100644
--- a/p3/data.go
+++ b/p3/data.go
@@ -32,7 +32,7 @@ func readData(f *os.File) ([][]float64, error) {
 
 	data, err := parseRecords(records)
 	if err != nil {
-		return data, err
+		return nil, err
 	}
 
 	return data, nil