diff --git a/src/main/java/org/gitlab4j/api/models/GroupFilter.java b/src/main/java/org/gitlab4j/api/models/GroupFilter.java
index 2eb4c988e0851a993aaf5ff4e1b4bdbbba39ff33..0b9b27499fc66f2963bc6a9aaec49a76dc2f3352 100644
--- a/src/main/java/org/gitlab4j/api/models/GroupFilter.java
+++ b/src/main/java/org/gitlab4j/api/models/GroupFilter.java
@@ -136,7 +136,7 @@ public class GroupFilter {
             .withParam("statistics", statistics)
             .withParam("with_custom_attributes", withCustomAttributes)
             .withParam("owned", owned)  
-            .withParam("min_access_level ", accessLevel)
+            .withParam("min_access_level", accessLevel)
         );
     }
 }