diff --git a/pom.xml b/pom.xml
index 701959d..271e658 100644
--- a/pom.xml
+++ b/pom.xml
@@ -253,6 +253,9 @@
                                     <exclude>**/module-info.java</exclude>
                                     <exclude>**/PrestoPersonDAO.java</exclude>
                                 </excludes>
+                                <compilerArgs>
+                                    <compilerArg>-Xlint:unchecked</compilerArg>
+                                </compilerArgs>
                             </configuration>
 
                             <executions>
@@ -305,6 +308,9 @@
                             <excludes>
                                 <exclude>**/module-info.java</exclude>
                             </excludes>
+                            <compilerArgs>
+                                <compilerArg>-Xlint:unchecked</compilerArg>
+                            </compilerArgs>
                         </configuration>
 
                         <executions>
diff --git a/test/src/main/java/com/moparisthebest/jdbc/codegen/QueryMapperQmDao.java b/test/src/main/java/com/moparisthebest/jdbc/codegen/QueryMapperQmDao.java
index d9f9d10..2fa7745 100644
--- a/test/src/main/java/com/moparisthebest/jdbc/codegen/QueryMapperQmDao.java
+++ b/test/src/main/java/com/moparisthebest/jdbc/codegen/QueryMapperQmDao.java
@@ -216,11 +216,13 @@ public class QueryMapperQmDao implements QmDao {
 	}
 
 	@Override
+	@SuppressWarnings("unchecked")
 	public List<Map<String, String>> getAllNames() throws SQLException {
 		return qm.toListMap(allNames, Map.class, String.class);
 	}
 
 	@Override
+	@SuppressWarnings("unchecked")
 	public Map<String, String>[] getAllNamesArray() throws SQLException {
 		return qm.toArrayMap(allNames, Map.class, String.class);
 	}
diff --git a/test/src/test/java/com/moparisthebest/jdbc/CleaningQueryMapperTest.java b/test/src/test/java/com/moparisthebest/jdbc/CleaningQueryMapperTest.java
index ead1757..0a0455a 100644
--- a/test/src/test/java/com/moparisthebest/jdbc/CleaningQueryMapperTest.java
+++ b/test/src/test/java/com/moparisthebest/jdbc/CleaningQueryMapperTest.java
@@ -64,8 +64,9 @@ public class CleaningQueryMapperTest {
 	{
 		final Cleaner<FieldPerson> personCleaner = new Cleaner<FieldPerson>() {
 			@Override
-			public FieldPerson clean(final FieldPerson dto) {
-				return dto.cleanThyself();
+			@SuppressWarnings("unchecked")
+			public <E extends FieldPerson> E clean(final E dto) {
+				return (E) dto.cleanThyself();
 			}
 		};
 		return Arrays.asList(new Object[][] {