diff --git a/rEFIt_UEFI/Platform/Settings.cpp b/rEFIt_UEFI/Platform/Settings.cpp
index 6070c8888..0939c727a 100644
--- a/rEFIt_UEFI/Platform/Settings.cpp
+++ b/rEFIt_UEFI/Platform/Settings.cpp
@@ -5147,7 +5147,7 @@ GetUserSettings(
                  }
               }
               Signature = SIGNATURE_32(s1, s2, s3, s4);
-              DBG(" signature=\"%c%c%c%c\" (%8.8X)\n", S1, S2, S3, S4, Signature);
+              DBG(" signature=\"%c%c%c%c\" (%8.8X)\n", s1, s2, s3, s4, Signature);
             }
             // Get the table ids to drop
             Prop2 = GetProperty(Dict2, "TableId");