diff --git a/gradle.properties b/gradle.properties
index c9c8881..3b9c772 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,3 +1,3 @@
 group = org.xbib
 name = database
-version = 2.3.1
+version = 2.3.2
diff --git a/jdbc-query/src/main/java/org/xbib/jdbc/query/DatabaseImpl.java b/jdbc-query/src/main/java/org/xbib/jdbc/query/DatabaseImpl.java
index 0ceb0f0..8c9f5fb 100644
--- a/jdbc-query/src/main/java/org/xbib/jdbc/query/DatabaseImpl.java
+++ b/jdbc-query/src/main/java/org/xbib/jdbc/query/DatabaseImpl.java
@@ -466,6 +466,7 @@ public class DatabaseImpl implements Database {
         }
         params.forEach((k, v) -> {
             switch (v) {
+                case Character c -> sql.argString(k, Character.toString(c));
                 case String s -> sql.argString(k, s);
                 case Integer i -> sql.argInteger(k, i);
                 case Long l -> sql.argLong(k, l);
@@ -484,6 +485,7 @@ public class DatabaseImpl implements Database {
         }
         params.forEach((k, v) -> {
             switch (v) {
+                case Character c -> sql.argString(k, Character.toString(c));
                 case String s -> sql.argString(k, s);
                 case Integer i -> sql.argInteger(k, i);
                 case Long l -> sql.argLong(k, l);
@@ -502,6 +504,7 @@ public class DatabaseImpl implements Database {
         }
         params.forEach((k, v) -> {
             switch (v) {
+                case Character c -> sql.argString(k, Character.toString(c));
                 case String s -> sql.argString(k, s);
                 case Integer i -> sql.argInteger(k, i);
                 case Long l -> sql.argLong(k, l);
@@ -519,7 +522,7 @@ public class DatabaseImpl implements Database {
         for (int i = 0; i < classNames.size(); i++) {
             String className = classNames.get(i).toString();
             switch (className) {
-                case "java.lang.String" -> row.add(rows.getStringOrEmpty(i + 1));
+                case "java.lang.Character", "java.lang.String" -> row.add(rows.getStringOrEmpty(i + 1));
                 case "java.lang.Integer" -> row.add(rows.getIntegerOrNull(i + 1));
                 case "java.lang.Long" -> row.add(rows.getLongOrNull(i + 1));
                 case "java.lang.Boolean" -> row.add(rows.getBooleanOrFalse(i + 1));