@@ -17,10 +17,11 @@
 
 #include <errno.h>
 
 #import "OFCondition.h"
 #import "OFDate.h"
+#import "OFString.h"
 
 #import "OFBroadcastConditionFailedException.h"
 #import "OFConditionStillWaitingException.h"
 #import "OFInitializationFailedException.h"
 #import "OFSignalConditionFailedException.h"