diff --git a/codegen/src/main/java/org/web3j/codegen/SolidityFunctionWrapper.java b/codegen/src/main/java/org/web3j/codegen/SolidityFunctionWrapper.java
index 2eeddf4e6..0559fca03 100644
--- a/codegen/src/main/java/org/web3j/codegen/SolidityFunctionWrapper.java
+++ b/codegen/src/main/java/org/web3j/codegen/SolidityFunctionWrapper.java
@@ -587,10 +587,6 @@ private List<TypeSpec> buildStructTypes(final List<AbiDefinition> functionDefini
     private static String getStructName(String internalType) {
         final String fullStructName = internalType.substring(internalType.lastIndexOf(" ") + 1);
         String tempStructName = fullStructName.substring(fullStructName.lastIndexOf(".") + 1);
-        int arrayPos = tempStructName.indexOf("[");
-        if (arrayPos > -1) {
-            tempStructName = tempStructName.substring(0, arrayPos);
-        }
         final String structName =
                 SourceVersion.isName(tempStructName) ? tempStructName : "_" + tempStructName;
         return structName;
@@ -611,6 +607,7 @@ private String adjustToNativeTypeIfNecessary(NamedType component) {
     }
 
     private NamedType normalizeNamedType(NamedType namedType) {
+        // dynamic array
         if (namedType.getType().endsWith("[]") && namedType.getInternalType().endsWith("[]")) {
             return new NamedType(
                     namedType.getName(),
@@ -620,6 +617,18 @@ private NamedType normalizeNamedType(NamedType namedType) {
                             .getInternalType()
                             .substring(0, namedType.getInternalType().length() - 2),
                     namedType.isIndexed());
+        } else if (namedType.getType().startsWith("tuple[")
+                && namedType.getInternalType().contains("[")
+                && namedType.getInternalType().endsWith("]")) { // static array
+
+            return new NamedType(
+                    namedType.getName(),
+                    namedType.getType().substring(0, namedType.getType().indexOf("[")),
+                    namedType.getComponents(),
+                    namedType
+                            .getInternalType()
+                            .substring(0, namedType.getInternalType().indexOf("[")),
+                    namedType.isIndexed());
         } else {
             return namedType;
         }
@@ -637,38 +646,21 @@ private List<AbiDefinition.NamedType> extractStructs(
                             parameters.addAll(definition.getOutputs());
                             return parameters.stream()
                                     .map(this::normalizeNamedType)
-                                    .filter(namedType -> namedType.getType().startsWith("tuple"));
+                                    .filter(namedType -> namedType.getType().equals("tuple"));
                         })
                 .forEach(
                         namedType -> {
-                            if (namedType.getType().startsWith("tuple[")) {
-                                structMap.putIfAbsent(
-                                        namedType.flattenNamedType().structIdentifier(), namedType);
-                            } else {
-                                structMap.put(namedType.structIdentifier(), namedType);
-                            }
-
+                            structMap.put(namedType.structIdentifier(), namedType);
                             extractNested(namedType).stream()
                                     .map(this::normalizeNamedType)
                                     .filter(
                                             nestedNamedStruct ->
-                                                    nestedNamedStruct.getType().startsWith("tuple"))
+                                                    nestedNamedStruct.getType().equals("tuple"))
                                     .forEach(
-                                            nestedNamedType -> {
-                                                if (nestedNamedType
-                                                        .getType()
-                                                        .startsWith("tuple[")) {
-                                                    structMap.putIfAbsent(
-                                                            nestedNamedType
-                                                                    .flattenNamedType()
-                                                                    .structIdentifier(),
-                                                            nestedNamedType);
-                                                } else {
+                                            nestedNamedType ->
                                                     structMap.put(
                                                             nestedNamedType.structIdentifier(),
-                                                            nestedNamedType);
-                                                }
-                                            });
+                                                            nestedNamedType));
                         });
 
         return structMap.values().stream()
diff --git a/core/src/main/java/org/web3j/protocol/core/methods/response/AbiDefinition.java b/core/src/main/java/org/web3j/protocol/core/methods/response/AbiDefinition.java
index 12f17d830..e13d61295 100644
--- a/core/src/main/java/org/web3j/protocol/core/methods/response/AbiDefinition.java
+++ b/core/src/main/java/org/web3j/protocol/core/methods/response/AbiDefinition.java
@@ -298,17 +298,6 @@ public boolean isDynamic() {
             return components.stream().anyMatch(NamedType::isDynamic);
         }
 
-        public NamedType flattenNamedType() {
-            int arrayPos = this.type.indexOf("[");
-            if(arrayPos > 0) return new NamedType(
-                    this.name,
-                    this.type.substring(0, arrayPos),
-                    this.components,
-                    this.internalType.substring(0, this.internalType.indexOf("[")),
-                    this.indexed);
-            return this;
-        }
-
         @Override
         public boolean equals(Object o) {
             if (this == o) {