diff --git a/tools/maven/plugin/src/main/java/org/teavm/maven/AbstractTeaVMMojo.java b/tools/maven/plugin/src/main/java/org/teavm/maven/AbstractTeaVMMojo.java
index d9a7a03de..3209d1ab1 100644
--- a/tools/maven/plugin/src/main/java/org/teavm/maven/AbstractTeaVMMojo.java
+++ b/tools/maven/plugin/src/main/java/org/teavm/maven/AbstractTeaVMMojo.java
@@ -63,9 +63,6 @@ public abstract class AbstractTeaVMMojo extends AbstractMojo {
     @Parameter
     protected boolean minifying = true;
 
-    @Parameter
-    protected String mainClass;
-
     @Parameter
     protected Properties properties;
 
diff --git a/tools/maven/plugin/src/main/java/org/teavm/maven/TeaVMCompileMojo.java b/tools/maven/plugin/src/main/java/org/teavm/maven/TeaVMCompileMojo.java
index eb63ca31b..28633023c 100644
--- a/tools/maven/plugin/src/main/java/org/teavm/maven/TeaVMCompileMojo.java
+++ b/tools/maven/plugin/src/main/java/org/teavm/maven/TeaVMCompileMojo.java
@@ -78,7 +78,7 @@ public class TeaVMCompileMojo extends AbstractTeaVMMojo {
     private TeaVMTool tool = new TeaVMTool();
 
     @Parameter
-    private WasmBinaryVersion wasmVersion;
+    private WasmBinaryVersion wasmVersion = WasmBinaryVersion.V_0xC;
 
     @Override
     protected File getTargetDirectory() {