diff --git a/full/Changes b/full/Changes
index 8697d35..4ec9218 100644
--- a/full/Changes
+++ b/full/Changes
@@ -3,7 +3,10 @@
    - Implemented pipe extension in the search API (margaretha)
 11/12/2019
    - Added errors when requesting VC in caching process (margaretha, 
-     resolved #47) 
+     resolved #47)
+12/12/2019
+   - Added support for multiple cq parameters (margaretha, resolved #46)
+      
 
 # version 0.62.2
 17/10/2019
diff --git a/full/src/test/java/de/ids_mannheim/korap/web/controller/MultipleCorpusQueryTest.java b/full/src/test/java/de/ids_mannheim/korap/web/controller/MultipleCorpusQueryTest.java
new file mode 100644
index 0000000..1692fdc
--- /dev/null
+++ b/full/src/test/java/de/ids_mannheim/korap/web/controller/MultipleCorpusQueryTest.java
@@ -0,0 +1,86 @@
+package de.ids_mannheim.korap.web.controller;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.sun.jersey.api.client.ClientHandlerException;
+import com.sun.jersey.api.client.ClientResponse;
+import com.sun.jersey.api.client.UniformInterfaceException;
+
+import de.ids_mannheim.korap.config.SpringJerseyTest;
+import de.ids_mannheim.korap.exceptions.KustvaktException;
+import de.ids_mannheim.korap.exceptions.StatusCodes;
+import de.ids_mannheim.korap.utils.JsonUtils;
+
+public class MultipleCorpusQueryTest extends SpringJerseyTest {
+
+    @Test
+    public void testSearchGet () throws KustvaktException {
+        ClientResponse response = resource().path(API_VERSION).path("search")
+                .queryParam("q", "das").queryParam("ql", "poliqarp")
+                .queryParam("cq", "pubPlace=München")
+                .queryParam("cq", "textSigle=\"GOE/AGA/01784\"")
+                .get(ClientResponse.class);
+        assertEquals(ClientResponse.Status.OK.getStatusCode(),
+                response.getStatus());
+        String entity = response.getEntity(String.class);
+        JsonNode node = JsonUtils.readTree(entity);
+        node = node.at("/collection/operands/1");
+        assertEquals("koral:docGroup", node.at("/@type").asText());
+        assertEquals("operation:and", node.at("/operation").asText());
+        assertEquals(2, node.at("/operands").size());
+        assertEquals("koral:doc", node.at("/operands/0/@type").asText());
+        assertEquals("match:eq", node.at("/operands/0/match").asText());
+        assertEquals("pubPlace", node.at("/operands/0/key").asText());
+        assertEquals("München", node.at("/operands/0/value").asText());
+        assertEquals("textSigle", node.at("/operands/1/key").asText());
+        assertEquals("GOE/AGA/01784", node.at("/operands/1/value").asText());
+    }
+
+    @Test
+    public void testStatisticsWithMultipleCq ()
+            throws UniformInterfaceException, ClientHandlerException,
+            KustvaktException {
+        ClientResponse response = resource().path(API_VERSION)
+                .path("statistics").queryParam("cq", "textType=Abhandlung")
+                .queryParam("cq", "corpusSigle=GOE")
+                .method("GET", ClientResponse.class);
+        assertEquals(ClientResponse.Status.OK.getStatusCode(),
+                response.getStatus());
+        String entity = response.getEntity(String.class);
+        JsonNode node = JsonUtils.readTree(entity);
+        assertEquals(2, node.at("/documents").asInt());
+        assertEquals(138180, node.at("/tokens").asInt());
+        assertEquals(5687, node.at("/sentences").asInt());
+        assertEquals(258, node.at("/paragraphs").asInt());
+
+        assertTrue(node.at("/warnings").isMissingNode());
+    }
+
+    @Test
+    public void testStatisticsWithMultipleCorpusQuery ()
+            throws UniformInterfaceException, ClientHandlerException,
+            KustvaktException {
+        ClientResponse response =
+                resource().path(API_VERSION).path("statistics")
+                        .queryParam("corpusQuery", "textType=Autobiographie")
+                        .queryParam("corpusQuery", "corpusSigle=GOE")
+                        .method("GET", ClientResponse.class);
+        assertEquals(ClientResponse.Status.OK.getStatusCode(),
+                response.getStatus());
+        String entity = response.getEntity(String.class);
+        JsonNode node = JsonUtils.readTree(entity);
+        assertEquals(9, node.at("/documents").asInt());
+        assertEquals(527662, node.at("/tokens").asInt());
+        assertEquals(19387, node.at("/sentences").asInt());
+        assertEquals(514, node.at("/paragraphs").asInt());
+
+        assertEquals(StatusCodes.DEPRECATED_PARAMETER,
+                node.at("/warnings/0/0").asInt());
+        assertEquals("Parameter corpusQuery is deprecated in favor of cq.",
+                node.at("/warnings/0/1").asText());
+    }
+}
diff --git a/full/src/test/java/de/ids_mannheim/korap/web/controller/StatisticsControllerTest.java b/full/src/test/java/de/ids_mannheim/korap/web/controller/StatisticsControllerTest.java
index dc5d3c7..8ac68fa 100644
--- a/full/src/test/java/de/ids_mannheim/korap/web/controller/StatisticsControllerTest.java
+++ b/full/src/test/java/de/ids_mannheim/korap/web/controller/StatisticsControllerTest.java
@@ -228,10 +228,10 @@
                      response.getStatus());
         String ent = response.getEntity(String.class);
         JsonNode node = JsonUtils.readTree(ent);
-        assertEquals(node.at("/errors/0/0").asInt(),
-                de.ids_mannheim.korap.util.StatusCodes.UNABLE_TO_PARSE_JSON);
-        assertEquals(node.at("/errors/0/1").asText(),
-                "Unable to parse JSON");
+        assertEquals(StatusCodes.DESERIALIZATION_FAILED,
+                node.at("/errors/0/0").asInt());
+        assertEquals("Failed deserializing json object: { \"collection\" : }",
+                node.at("/errors/0/1").asText());
     }
     
     @Test