diff --git a/passes/opt/opt.cc b/passes/opt/opt.cc
index dc88563c236..453dbc12518 100644
--- a/passes/opt/opt.cc
+++ b/passes/opt/opt.cc
@@ -182,7 +182,6 @@ struct OptPass : public Pass {
 		}
 
 		design->optimize();
-		design->sort();
 		design->check();
 
 		log_header(design, fast_mode ? "Finished fast OPT passes.\n" : "Finished OPT passes. (There is nothing left to do.)\n");
diff --git a/passes/opt/opt_clean.cc b/passes/opt/opt_clean.cc
index ba39b9c8086..65542111599 100644
--- a/passes/opt/opt_clean.cc
+++ b/passes/opt/opt_clean.cc
@@ -745,7 +745,6 @@ struct CleanPass : public Pass {
 			log("Removed %d unused cells and %d unused wires.\n", count_rm_cells, count_rm_wires);
 
 		design->optimize();
-		design->sort();
 		design->check();
 
 		keep_cache.reset();
diff --git a/techlibs/ice40/ice40_opt.cc b/techlibs/ice40/ice40_opt.cc
index b13d3301856..cf6c4ec7762 100644
--- a/techlibs/ice40/ice40_opt.cc
+++ b/techlibs/ice40/ice40_opt.cc
@@ -257,7 +257,6 @@ struct Ice40OptPass : public Pass {
 		}
 
 		design->optimize();
-		design->sort();
 		design->check();
 
 		log_header(design, "Finished OPT passes. (There is nothing left to do.)\n");