diff --git a/go/analysis/passes/errorsas/errorsas.go b/go/analysis/passes/errorsas/errorsas.go
index 337a61d..c411466 100644
--- a/go/analysis/passes/errorsas/errorsas.go
+++ b/go/analysis/passes/errorsas/errorsas.go
@@ -47,6 +47,9 @@
 		if fn == nil {
 			return // not a static call
 		}
+		if len(call.Args) < 2 {
+			return // not enough arguments, e.g. called with return values of another function
+		}
 		if fn.FullName() == "errors.As" && !pointerToInterfaceOrError(pass, call.Args[1]) {
 			pass.Reportf(call.Pos(), "second argument to errors.As must be a pointer to an interface or a type implementing error")
 		}
diff --git a/go/analysis/passes/errorsas/testdata/src/a/a.go b/go/analysis/passes/errorsas/testdata/src/a/a.go
index bebf267..d13dee2 100644
--- a/go/analysis/passes/errorsas/testdata/src/a/a.go
+++ b/go/analysis/passes/errorsas/testdata/src/a/a.go
@@ -18,6 +18,8 @@
 	m()
 }
 
+func two() (error, interface{}) { return nil, nil }
+
 func _() {
 	var (
 		e  error
@@ -37,4 +39,5 @@
 	errors.As(nil, m)   // want `second argument to errors.As must be a pointer to an interface or a type implementing error`
 	errors.As(nil, f)   // want `second argument to errors.As must be a pointer to an interface or a type implementing error`
 	errors.As(nil, &i)  // want `second argument to errors.As must be a pointer to an interface or a type implementing error`
+	errors.As(two())
 }