diff --git a/core/src/main/java/org/mapstruct/DecoratedWith.java b/core/src/main/java/org/mapstruct/DecoratedWith.java
index 215843ec0..b16dbad4a 100644
--- a/core/src/main/java/org/mapstruct/DecoratedWith.java
+++ b/core/src/main/java/org/mapstruct/DecoratedWith.java
@@ -41,7 +41,7 @@ import java.lang.annotation.Target;
  * @author Gunnar Morling
  */
 @Target(ElementType.TYPE)
-@Retention(RetentionPolicy.RUNTIME)
+@Retention(RetentionPolicy.SOURCE)
 public @interface DecoratedWith {
 
     /**
diff --git a/core/src/main/java/org/mapstruct/Mapping.java b/core/src/main/java/org/mapstruct/Mapping.java
index f3c650e30..872cba812 100644
--- a/core/src/main/java/org/mapstruct/Mapping.java
+++ b/core/src/main/java/org/mapstruct/Mapping.java
@@ -18,6 +18,10 @@
  */
 package org.mapstruct;
 
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 
@@ -26,6 +30,8 @@ import java.util.Date;
  *
  * @author Gunnar Morling
  */
+@Retention(RetentionPolicy.SOURCE)
+@Target(ElementType.METHOD)
 public @interface Mapping {
 
     /**
diff --git a/core/src/main/java/org/mapstruct/MappingTarget.java b/core/src/main/java/org/mapstruct/MappingTarget.java
index 2a8c70e48..660cc93d3 100644
--- a/core/src/main/java/org/mapstruct/MappingTarget.java
+++ b/core/src/main/java/org/mapstruct/MappingTarget.java
@@ -19,6 +19,8 @@
 package org.mapstruct;
 
 import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 /**
@@ -28,6 +30,7 @@ import java.lang.annotation.Target;
  *
  * @author Andreas Gudian
  */
-@Target( ElementType.PARAMETER )
+@Target(ElementType.PARAMETER)
+@Retention(RetentionPolicy.CLASS)
 public @interface MappingTarget {
 }
diff --git a/core/src/main/java/org/mapstruct/Mappings.java b/core/src/main/java/org/mapstruct/Mappings.java
index 6de160ae2..aaf8ade71 100644
--- a/core/src/main/java/org/mapstruct/Mappings.java
+++ b/core/src/main/java/org/mapstruct/Mappings.java
@@ -18,11 +18,18 @@
  */
 package org.mapstruct;
 
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
 /**
  * Configures the mappings of several bean attributes.
  *
  * @author Gunnar Morling
  */
+@Retention(RetentionPolicy.SOURCE)
+@Target(ElementType.METHOD)
 public @interface Mappings {
 
     /**
diff --git a/core/src/main/java/org/mapstruct/TargetType.java b/core/src/main/java/org/mapstruct/TargetType.java
index 34d44671e..303eb95f9 100644
--- a/core/src/main/java/org/mapstruct/TargetType.java
+++ b/core/src/main/java/org/mapstruct/TargetType.java
@@ -19,6 +19,8 @@
 package org.mapstruct;
 
 import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 /**
@@ -29,6 +31,7 @@ import java.lang.annotation.Target;
  *
  * @author Andreas Gudian
  */
-@Target( ElementType.PARAMETER )
+@Target(ElementType.PARAMETER)
+@Retention(RetentionPolicy.CLASS)
 public @interface TargetType {
 }