diff --git a/helper/logging/logging_http_transport_test.go b/helper/logging/logging_http_transport_test.go
index b9c986fe5f..875241a108 100644
--- a/helper/logging/logging_http_transport_test.go
+++ b/helper/logging/logging_http_transport_test.go
@@ -81,7 +81,7 @@ func TestNewLoggingHTTPTransport(t *testing.T) {
 		"@level":                    "debug",
 		"@module":                   "provider",
 		"@message":                  "Received HTTP Response",
-		"Content-Type":              "text/html",
+		"Content-Type":              "text/html; charset=utf-8",
 		"tf_http_op_type":           "response",
 		"tf_http_res_status_code":   float64(200),
 		"tf_http_res_version":       "HTTP/2.0",
@@ -172,7 +172,7 @@ func TestNewSubsystemLoggingHTTPTransport(t *testing.T) {
 		"@level":                    "debug",
 		"@module":                   "provider.test-subsystem",
 		"@message":                  "Received HTTP Response",
-		"Content-Type":              "text/html",
+		"Content-Type":              "text/html; charset=utf-8",
 		"tf_http_op_type":           "response",
 		"tf_http_res_status_code":   float64(200),
 		"tf_http_res_version":       "HTTP/2.0",