diff --git a/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/connection/ConnectionRESTService.java b/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/connection/ConnectionRESTService.java
index 5b67465c5..2f29fbe81 100644
--- a/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/connection/ConnectionRESTService.java
+++ b/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/connection/ConnectionRESTService.java
@@ -241,6 +241,7 @@ public class ConnectionRESTService {
      *     If an error occurs while creating the connection.
      */
     @POST
+    @Produces(MediaType.TEXT_PLAIN)
     @AuthProviderRESTExposure
     public String createConnection(@QueryParam("token") String authToken,
             APIConnection connection) throws GuacamoleException {
diff --git a/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/connectiongroup/ConnectionGroupRESTService.java b/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/connectiongroup/ConnectionGroupRESTService.java
index 2dbf94d1e..bb3b843cd 100644
--- a/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/connectiongroup/ConnectionGroupRESTService.java
+++ b/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/connectiongroup/ConnectionGroupRESTService.java
@@ -193,6 +193,7 @@ public class ConnectionGroupRESTService {
      *     If an error occurs while creating the connection group.
      */
     @POST
+    @Produces(MediaType.TEXT_PLAIN)
     @AuthProviderRESTExposure
     public String createConnectionGroup(@QueryParam("token") String authToken,
             APIConnectionGroup connectionGroup) throws GuacamoleException {
diff --git a/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/user/UserRESTService.java b/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/user/UserRESTService.java
index 6e57520d1..a99134d91 100644
--- a/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/user/UserRESTService.java
+++ b/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/rest/user/UserRESTService.java
@@ -225,6 +225,7 @@ public class UserRESTService {
      * @return The username of the newly created user.
      */
     @POST
+    @Produces(MediaType.TEXT_PLAIN)
     @AuthProviderRESTExposure
     public String createUser(@QueryParam("token") String authToken, APIUser user) 
             throws GuacamoleException {