Index: src/XMPPDiscoEntity.m
==================================================================
--- src/XMPPDiscoEntity.m
+++ src/XMPPDiscoEntity.m
@@ -112,11 +112,12 @@
 }
 
 - (OFString *)capsHash
 {
 	OFMutableString *caps = [OFMutableString string];
-	OFSHA1Hash *hash = [OFSHA1Hash cryptoHash];
+	OFSHA1Hash *hash = [OFSHA1Hash
+	    cryptoHashWithAllowsSwappableMemory: true];
 	OFData *digest;
 
 	for (XMPPDiscoIdentity *identity in _identities)
 		[caps appendFormat: @"%@/%@//%@<",
 		    identity.category, identity.type, identity.name];