diff --git a/Source/u_mapinfo.c b/Source/u_mapinfo.c
index 23daaac4..6bf125c6 100644
--- a/Source/u_mapinfo.c
+++ b/Source/u_mapinfo.c
@@ -515,7 +515,10 @@ static int ParseStandardProperty(u_scanner_t* s, mapentry_t *mape)
         if (U_CheckToken(s, ','))
         {
           if (U_MustGetToken(s, TK_StringConst))
+          {
             key = strdup(s->string);
+            key[0] = tolower(key[0]);
+          }
         }
       }