diff --git a/tests/integrationbase.go b/tests/integrationbase.go
index 46936918d78a..2c9fff5ff907 100644
--- a/tests/integrationbase.go
+++ b/tests/integrationbase.go
@@ -394,13 +394,13 @@ func (s *IntegrationBase) sanitizeHistory(expectedHistory string) string {
 				continue
 			}
 			if st == stateNewLine {
-				ret.WriteRune('\n')
+				_, _ = ret.WriteRune('\n')
 			}
 			if spaceCounter > 0 {
-				ret.WriteString(strings.Repeat(" ", spaceCounter))
+				_, _ = ret.WriteString(strings.Repeat(" ", spaceCounter))
 				spaceCounter = 0
 			}
-			ret.WriteRune(r)
+			_, _ = ret.WriteRune(r)
 			st = stateNormal
 		}
 	}