diff --git a/interp/gta.go b/interp/gta.go
index 05b5ac203..d75f0b2e4 100644
--- a/interp/gta.go
+++ b/interp/gta.go
@@ -217,6 +217,12 @@ func (interp *Interpreter) gta(root *node, rpath, importPath, pkgName string) ([
 					if name == "" {
 						name = interp.pkgNames[ipath]
 					}
+
+					// If an incomplete type exists, delete it
+					if sym, exists := sc.sym[name]; exists && sym.kind == typeSym && sym.typ.incomplete {
+						delete(sc.sym, name)
+					}
+
 					// Imports of a same package are all mapped in the same scope, so we cannot just
 					// map them by their names, otherwise we could have collisions from same-name
 					// imports in different source files of the same package. Therefore, we suffix
diff --git a/interp/interp_eval_test.go b/interp/interp_eval_test.go
index d7e756630..7cde405ad 100644
--- a/interp/interp_eval_test.go
+++ b/interp/interp_eval_test.go
@@ -1751,6 +1751,29 @@ func TestRestrictedEnv(t *testing.T) {
 	}
 }
 
+func TestIssue1388(t *testing.T) {
+	i := interp.New(interp.Options{Env: []string{"foo=bar"}})
+	err := i.Use(stdlib.Symbols)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = i.Eval(`x := errors.New("")`)
+	if err == nil {
+		t.Fatal("Expected an error")
+	}
+
+	_, err = i.Eval(`import "errors"`)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = i.Eval(`x := errors.New("")`)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
 func TestIssue1383(t *testing.T) {
 	const src = `
 			package main