diff --git a/physical.cpp b/physical.cpp
index fc518f8..aa9d3e4 100644
--- a/physical.cpp
+++ b/physical.cpp
@@ -128,7 +128,7 @@
 {
     static const std::string prefix =
         "xyz.openbmc_project.Led.Physical.Palette.";
-    if (!color.length())
+    if (color.empty())
         return;
     std::string tmp = color;
     tmp[0] = toupper(tmp[0]);