diff --git a/include/smbios_mdrv2.hpp b/include/smbios_mdrv2.hpp
index 4f3b654..ed3cf34 100644
--- a/include/smbios_mdrv2.hpp
+++ b/include/smbios_mdrv2.hpp
@@ -244,7 +244,7 @@
 static inline std::string positionToString(uint8_t positionNum,
                                            uint8_t structLen, uint8_t* dataIn)
 {
-    if (dataIn == nullptr)
+    if (dataIn == nullptr || positionNum == 0)
     {
         return "";
     }