diff --git a/SoObjects/SOGo/NSString+Utilities.m b/SoObjects/SOGo/NSString+Utilities.m
index 00a59b299..a18182bf8 100644
--- a/SoObjects/SOGo/NSString+Utilities.m
+++ b/SoObjects/SOGo/NSString+Utilities.m
@@ -20,6 +20,7 @@
  * Boston, MA 02111-1307, USA.
  */
 
+#import <Foundation/NSArray.h>
 #import <Foundation/NSEnumerator.h>
 
 #import "NSString+Utilities.h"