diff --git a/MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c b/MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c
index 9c5d4bb61e..ea6b124f10 100644
--- a/MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c
+++ b/MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c
@@ -777,6 +777,11 @@ AppendAltCfgString (
     }
     StringPtr += Length;
 
+    //
+    // Skip the character "&" before "OFFSET".
+    //
+    StringPtr ++;
+
     //
     // Calculate Value and convert it to hex string.
     //