diff --git a/processor/src/test/java/org/mapstruct/ap/test/imports/InnerClassesImportsTest.java b/processor/src/test/java/org/mapstruct/ap/test/imports/InnerClassesImportsTest.java
index fefaca82a..00bfa61af 100644
--- a/processor/src/test/java/org/mapstruct/ap/test/imports/InnerClassesImportsTest.java
+++ b/processor/src/test/java/org/mapstruct/ap/test/imports/InnerClassesImportsTest.java
@@ -32,6 +32,7 @@ import org.mapstruct.ap.test.imports.innerclasses.SourceWithInnerClass;
 import org.mapstruct.ap.test.imports.innerclasses.SourceWithInnerClass.SourceInnerClass;
 import org.mapstruct.ap.test.imports.innerclasses.TargetWithInnerClass;
 import org.mapstruct.ap.test.imports.innerclasses.TargetWithInnerClass.TargetInnerClass;
+import org.mapstruct.ap.test.imports.innerclasses.TargetWithInnerClass.TargetInnerClass.TargetInnerInnerClass;
 import org.mapstruct.ap.testutil.IssueKey;
 import org.mapstruct.ap.testutil.WithClasses;
 import org.mapstruct.ap.testutil.runner.AnnotationProcessorTestRunner;
@@ -70,6 +71,20 @@ public class InnerClassesImportsTest {
         generatedSource.forMapper( InnerClassMapper.class ).containsImportFor( TargetInnerClass.class );
     }
 
+    @Test
+    @IssueKey( "412" )
+    public void mapperRequiresInnerInnerClassImports() {
+        SourceInnerClass source = new SourceInnerClass();
+        source.setValue( 412 );
+
+        TargetInnerInnerClass target = InnerClassMapper.INSTANCE.innerSourceToInnerInnerTarget( source );
+
+        assertThat( target ).isNotNull();
+        assertThat( target.getValue() ).isEqualTo( 412 );
+        generatedSource.forMapper( InnerClassMapper.class ).containsImportFor( SourceInnerClass.class );
+        generatedSource.forMapper( InnerClassMapper.class ).containsImportFor( TargetInnerInnerClass.class );
+    }
+
     @Test
     @IssueKey( "209" )
     public void mapperRequiresInnerEnumImports() {
diff --git a/processor/src/test/java/org/mapstruct/ap/test/imports/innerclasses/InnerClassMapper.java b/processor/src/test/java/org/mapstruct/ap/test/imports/innerclasses/InnerClassMapper.java
index 89a38ad7b..1b9636c35 100644
--- a/processor/src/test/java/org/mapstruct/ap/test/imports/innerclasses/InnerClassMapper.java
+++ b/processor/src/test/java/org/mapstruct/ap/test/imports/innerclasses/InnerClassMapper.java
@@ -21,6 +21,7 @@ package org.mapstruct.ap.test.imports.innerclasses;
 import org.mapstruct.Mapper;
 import org.mapstruct.ap.test.imports.innerclasses.SourceWithInnerClass.SourceInnerClass;
 import org.mapstruct.ap.test.imports.innerclasses.TargetWithInnerClass.TargetInnerClass;
+import org.mapstruct.ap.test.imports.innerclasses.TargetWithInnerClass.TargetInnerClass.TargetInnerInnerClass;
 import org.mapstruct.factory.Mappers;
 
 @Mapper
@@ -32,4 +33,6 @@ public interface InnerClassMapper {
 
     TargetInnerClass innerSourceToInnerTarget(SourceInnerClass source);
 
+    TargetInnerInnerClass innerSourceToInnerInnerTarget(SourceInnerClass source);
+
 }
diff --git a/processor/src/test/java/org/mapstruct/ap/test/imports/innerclasses/TargetWithInnerClass.java b/processor/src/test/java/org/mapstruct/ap/test/imports/innerclasses/TargetWithInnerClass.java
index 2ea5b6288..9003bb43d 100644
--- a/processor/src/test/java/org/mapstruct/ap/test/imports/innerclasses/TargetWithInnerClass.java
+++ b/processor/src/test/java/org/mapstruct/ap/test/imports/innerclasses/TargetWithInnerClass.java
@@ -40,6 +40,17 @@ public class TargetWithInnerClass {
         public void setValue(int value) {
             this.value = value;
         }
-    }
 
+        public static class TargetInnerInnerClass {
+            private int value;
+
+            public int getValue() {
+                return value;
+            }
+
+            public void setValue(int value) {
+                this.value = value;
+            }
+        }
+    }
 }