diff --git a/core/src/main/java/org/teavm/model/analysis/ClassInitializerAnalysis.java b/core/src/main/java/org/teavm/model/analysis/ClassInitializerAnalysis.java
index a036d44b2..b439ae005 100644
--- a/core/src/main/java/org/teavm/model/analysis/ClassInitializerAnalysis.java
+++ b/core/src/main/java/org/teavm/model/analysis/ClassInitializerAnalysis.java
@@ -289,6 +289,9 @@ public class ClassInitializerAnalysis implements ClassInitializerInfo {
             }
 
             analyze(className);
+            if (isDynamicInitializer(className)) {
+                methodInfo.anyFieldModified = true;
+            }
         }
 
         private void analyzeCalledMethod(MethodInfo calledMethod) {