diff --git a/go/analysis/unitchecker/main.go b/go/analysis/unitchecker/main.go
index 844e8f3dac..a1fe3d38d5 100644
--- a/go/analysis/unitchecker/main.go
+++ b/go/analysis/unitchecker/main.go
@@ -22,6 +22,7 @@ import (
 	"golang.org/x/tools/go/analysis/passes/cgocall"
 	"golang.org/x/tools/go/analysis/passes/composite"
 	"golang.org/x/tools/go/analysis/passes/copylock"
+	"golang.org/x/tools/go/analysis/passes/errorsas"
 	"golang.org/x/tools/go/analysis/passes/httpresponse"
 	"golang.org/x/tools/go/analysis/passes/loopclosure"
 	"golang.org/x/tools/go/analysis/passes/lostcancel"
@@ -47,6 +48,7 @@ func main() {
 		cgocall.Analyzer,
 		composite.Analyzer,
 		copylock.Analyzer,
+		errorsas.Analyzer,
 		httpresponse.Analyzer,
 		loopclosure.Analyzer,
 		lostcancel.Analyzer,