diff --git a/src/main/java/org/jruby/ext/openssl/PKeyEC.java b/src/main/java/org/jruby/ext/openssl/PKeyEC.java
index 68203906..5e4a8624 100644
--- a/src/main/java/org/jruby/ext/openssl/PKeyEC.java
+++ b/src/main/java/org/jruby/ext/openssl/PKeyEC.java
@@ -976,7 +976,7 @@ private boolean getPointAndGroup(ThreadContext context, IRubyObject groupOrPoint
 
             if ( groupOrPoint instanceof Group) {
                 this.group = (Group) groupOrPoint;
-                this.point = (ECPoint) ((Group) groupOrPoint).generator(context);
+                this.point = this.group.getParamSpec().getGenerator();
             } else {
                 throw runtime.newTypeError(groupOrPoint, _EC(runtime).getClass("Group"));
             }