diff --git a/internal/common/common_linux.go b/internal/common/common_linux.go
index 3d0fc50..c0aa9c7 100644
--- a/internal/common/common_linux.go
+++ b/internal/common/common_linux.go
@@ -35,7 +35,7 @@ func NumProcs() (uint64, error) {
 	}
 	defer f.Close()
 
-	list, err := f.Readdir(-1)
+	list, err := f.Readdirnames(-1)
 	if err != nil {
 		return 0, err
 	}