diff --git a/cmd/icinga-kubernetes/main.go b/cmd/icinga-kubernetes/main.go
index d9e2cd8..3c590e6 100644
--- a/cmd/icinga-kubernetes/main.go
+++ b/cmd/icinga-kubernetes/main.go
@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"flag"
+	"fmt"
 	_ "github.com/go-sql-driver/mysql"
 	"github.com/google/uuid"
 	"github.com/icinga/icinga-go-library/backoff"
@@ -154,7 +155,9 @@ func main() {
 					if err != nil {
 						klog.Fatal(err)
 					}
-					defer rows.Close()
+					defer func() {
+						_ = rows.Close()
+					}()
 
 					dbLog.Info("Dropping schema")
 
@@ -164,7 +167,7 @@ func main() {
 							klog.Fatal(err)
 						}
 
-						_, err := kdb.Exec("DROP TABLE " + tableName)
+						_, err := kdb.Exec(fmt.Sprintf(`DROP TABLE %s`, tableName))
 						if err != nil {
 							klog.Fatal(err)
 						}