diff --git a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/errorparsers/AbstractErrorParser.java b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/errorparsers/AbstractErrorParser.java
index 113785e76d5..04843548193 100644
--- a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/errorparsers/AbstractErrorParser.java
+++ b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/errorparsers/AbstractErrorParser.java
@@ -17,6 +17,7 @@ import org.eclipse.cdt.core.IErrorParser;
 
 /**
  * Abstract Error Parser that implements simple line processing using patterns array
+ * @since 5.1
  */
 public class AbstractErrorParser implements IErrorParser {
 
diff --git a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/errorparsers/ErrorPattern.java b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/errorparsers/ErrorPattern.java
index eb970da9814..4f4386a3c6f 100644
--- a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/errorparsers/ErrorPattern.java
+++ b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/errorparsers/ErrorPattern.java
@@ -24,6 +24,7 @@ import org.eclipse.core.runtime.Path;
 
 /**
  * Error Pattern - used by Error Parser to convert build output to problem markers
+ * @since 5.1
  */
 public class ErrorPattern {
 	private final Pattern pattern;