diff --git a/histream-export/src/main/java/de/sekmi/histream/export/VisitFragmentParser.java b/histream-export/src/main/java/de/sekmi/histream/export/VisitFragmentParser.java
index 92aa0fb46996004f5b5bbd2dcdc29adb9a197887..196618e6d97182369d10b8b2304cc014cdbe16be 100644
--- a/histream-export/src/main/java/de/sekmi/histream/export/VisitFragmentParser.java
+++ b/histream-export/src/main/java/de/sekmi/histream/export/VisitFragmentParser.java
@@ -140,7 +140,7 @@ abstract class VisitFragmentParser extends GroupedXMLWriter {
 	/**
 	 * Called after each patient fragment was parsed.
 	 * The patient fragment does not contain any encounters,
-	 * these are provided to {@link #visitFragment(Node)}.
+	 * these are provided to {@link #visitFragment(Element)}.
 	 * @param patient patient node
 	 * @throws ObservationException error
 	 */
diff --git a/histream-export/src/main/java/de/sekmi/histream/export/csv/Table.java b/histream-export/src/main/java/de/sekmi/histream/export/csv/Table.java
index b8381de320f05c86e9e49762b00b5c8aaf367b08..cec66932f90808af1b8321424545a249f6cb7292 100644
--- a/histream-export/src/main/java/de/sekmi/histream/export/csv/Table.java
+++ b/histream-export/src/main/java/de/sekmi/histream/export/csv/Table.java
@@ -14,8 +14,8 @@ class Table implements TableWriter{
 	private final CSVWriter export;
 	private PrintWriter out;
 	/**
-	 * @param csvWriter
-	 * @throws IOException 
+	 * @param csvWriter CSV writer
+	 * @throws IOException IO error
 	 */
 	Table(CSVWriter csvWriter, String filename) throws IOException {
 		export = csvWriter;
diff --git a/histream-i2b2/src/main/java/de/sekmi/histream/i2b2/I2b2Extractor.java b/histream-i2b2/src/main/java/de/sekmi/histream/i2b2/I2b2Extractor.java
index aa36afa197f5f43c6e3d92b4bbe577c409940c4b..1834743719cc5e74ae0022715f6602048b82603a 100644
--- a/histream-i2b2/src/main/java/de/sekmi/histream/i2b2/I2b2Extractor.java
+++ b/histream-i2b2/src/main/java/de/sekmi/histream/i2b2/I2b2Extractor.java
@@ -58,8 +58,8 @@ public abstract class I2b2Extractor implements ObservationSupplier {
 	 * <p>
 	 * 	
 	 * </p>
-	 * @param factory
-	 * @param dbc
+	 * @param factory extractor factory
+	 * @param dbc database connection
 	 * @throws SQLException error
 	 */
 	I2b2Extractor(I2b2ExtractorFactory factory, Connection dbc) throws SQLException {