diff --git a/java/src/json/ext/Parser.java b/java/src/json/ext/Parser.java
index ef283932..7c50bf27 100644
--- a/java/src/json/ext/Parser.java
+++ b/java/src/json/ext/Parser.java
@@ -1195,7 +1195,7 @@ IRubyObject createCustomDecimal(int p, int new_p) {
             Ruby runtime = getRuntime();
             ByteList num = absSubSequence(p, new_p);
             IRubyObject numString = runtime.newString(num.toString());
-            return parser.decimalClass.callMethod(context, "new", numString);
+            return runtime.getKernel().callMethod(context, "BigDecimal", numString);
         }
 
         
diff --git a/java/src/json/ext/Parser.rl b/java/src/json/ext/Parser.rl
index f670bad1..ae01e7ad 100644
--- a/java/src/json/ext/Parser.rl
+++ b/java/src/json/ext/Parser.rl
@@ -567,7 +567,7 @@ public class Parser extends RubyObject {
             Ruby runtime = getRuntime();
             ByteList num = absSubSequence(p, new_p);
             IRubyObject numString = runtime.newString(num.toString());
-            return parser.decimalClass.callMethod(context, "new", numString);
+            return runtime.getKernel().callMethod(context, "BigDecimal", numString);
         }
 
         %%{