diff --git a/src/libssh/channel.d b/src/libssh/channel.d
index 1c72444..2db755f 100644
--- a/src/libssh/channel.d
+++ b/src/libssh/channel.d
@@ -2,7 +2,6 @@
 
 import core.time;
 import std.algorithm.searching;
-import std.algorithm.mutation;
 
 import libssh.c_bindings.libssh;
 import libssh.c_bindings.server;
@@ -23,7 +22,8 @@ class SSHChannelSet {
     }
 
     void remove(SSHChannel channel) {
-        this._channels = std.algorithm.mutation.remove!(a => a == channel)(this._channels);
+        import mutation = std.algorithm.mutation;
+        this._channels = mutation.remove!(a => a == channel)(this._channels);
     }
 
     bool isSet(SSHChannel channel) {
diff --git a/src/libssh/threading.d b/src/libssh/threading.d
index 118405a..8a50eb2 100644
--- a/src/libssh/threading.d
+++ b/src/libssh/threading.d
@@ -58,7 +58,7 @@ private {
             _mutexes = remove!(a => a == mutex)(_mutexes);
         }
 
-        delete mutex;
+        destroy(mutex);
         *lock = null;
 
         return 0;