diff --git a/base/src/main/java/proguard/evaluation/ExecutingInvocationUnit.java b/base/src/main/java/proguard/evaluation/ExecutingInvocationUnit.java
index 827942e29..3d89a1ca4 100644
--- a/base/src/main/java/proguard/evaluation/ExecutingInvocationUnit.java
+++ b/base/src/main/java/proguard/evaluation/ExecutingInvocationUnit.java
@@ -419,7 +419,7 @@ private MethodResult createFallbackResult(MethodExecutionInfo methodInfo) {
 
     Object instanceId = null;
     if (instanceValue != null && instanceValue.isSpecific()) {
-      instanceId = ((IdentifiedReferenceValue) instanceValue).id;
+      instanceId = PartialEvaluatorUtils.getIdFromSpecificReferenceValue(instanceValue);
     }
 
     boolean returnsSameTypeAsInstance = methodInfo.returnsSameTypeAsInstance();
diff --git a/base/src/main/java/proguard/evaluation/executor/ReflectionExecutor.java b/base/src/main/java/proguard/evaluation/executor/ReflectionExecutor.java
index 9930ffacb..0cd893516 100644
--- a/base/src/main/java/proguard/evaluation/executor/ReflectionExecutor.java
+++ b/base/src/main/java/proguard/evaluation/executor/ReflectionExecutor.java
@@ -93,12 +93,10 @@ private Optional<MethodResult> createFallbackResultIfInvalidParameters(
       return Optional.of(createFallbackResultMethod(methodExecutionInfo, valueCalculator));
     }
 
-    int paramOffset = methodExecutionInfo.isStatic() ? 0 : 1;
     if ((methodExecutionInfo.isInstanceMethod()
             && (!instance.isParticular() // NOSONAR instance can't be null for instance methods
                 || isNonPreciseParticularValue(instance)))
         || methodExecutionInfo.getParameters().stream()
-            .skip(paramOffset)
             .anyMatch(value -> !value.isParticular() || isNonPreciseParticularValue(value))) {
       // All parameters must be particular and real objects to use reflection. Detailed arrays can
       // be converted to a real object if they are particular.