diff --git a/lib/ipc/server.c b/lib/ipc/server.c
index d53a1eddf..2fcc548da 100644
--- a/lib/ipc/server.c
+++ b/lib/ipc/server.c
@@ -336,14 +336,14 @@ mach_init(const char *service, mach_port_t sport, heim_sipc ctx)
 	});
 
     dispatch_source_set_cancel_handler(s->source, ^{
-	    heim_sipc ctx = dispatch_get_context(dispatch_get_current_queue());
-	    struct mach_service *st = ctx->mech;
+	    heim_sipc sctx = dispatch_get_context(dispatch_get_current_queue());
+	    struct mach_service *st = sctx->mech;
 	    mach_port_mod_refs(mach_task_self(), st->sport,
 			       MACH_PORT_RIGHT_RECEIVE, -1);
 	    dispatch_release(st->queue);
 	    dispatch_release(st->source);
 	    free(st);
-	    free(ctx);
+	    free(sctx);
 	});
 
     dispatch_resume(s->source);