diff --git a/src/lib-sieve/sieve-binary.h b/src/lib-sieve/sieve-binary.h
index 4ccc26aa66467c84f6678454a28cecf9383bdd93..cac4a1f64335cd97a92d7c85573fb6066d793b97 100644
--- a/src/lib-sieve/sieve-binary.h
+++ b/src/lib-sieve/sieve-binary.h
@@ -2,7 +2,6 @@
 #define __SIEVE_BINARY_H
 
 #include "lib.h"
-#include "str.h"
 
 #include "sieve-common.h"