diff --git a/include/rapidjson/internal/strtod.h b/include/rapidjson/internal/strtod.h
index 939cadb..9c4b20d 100644
--- a/include/rapidjson/internal/strtod.h
+++ b/include/rapidjson/internal/strtod.h
@@ -477,7 +477,7 @@ inline double FullPrecision(double d, int p, const char* decimals, size_t length
         else if (cmp == 0) {
             // Round towards even
             if (approx.Significand() & 1)
-                return approx.NextDouble();
+                return adjustToNegative ? approx.PreviousDouble() : approx.NextDouble();
             else
                 return approx.Value();
         }