diff --git a/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/SecurityServicesFeature.java b/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/SecurityServicesFeature.java
index 79e39b3a0e68..136bb0e53d7d 100644
--- a/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/SecurityServicesFeature.java
+++ b/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/SecurityServicesFeature.java
@@ -686,10 +686,13 @@ private static Function<String, Class<?>> getConstructorParameterClassAccessor(I
                 if (engineDescription == null) {
                     return null;
                 }
-                if (consParamClassFieldFinal.getName().equals("constructorParameterClassName")) {
-                    return loader.findClass((String) consParamClassFieldFinal.get(engineDescription)).get();
+                if (consParamClassFieldFinal.getName().equals("constructorParameterClass")) {
+                    return (Class<?>) consParamClassFieldFinal.get(engineDescription);
+                }
+                String constructorParameterClassName = (String) consParamClassFieldFinal.get(engineDescription);
+                if (constructorParameterClassName != null) {
+                    return loader.findClass(constructorParameterClassName).get();
                 }
-                return (Class<?>) consParamClassFieldFinal.get(engineDescription);
             } catch (IllegalAccessException e) {
                 VMError.shouldNotReachHere(e);
             }