diff --git a/rtc_base/BUILD.gn b/rtc_base/BUILD.gn
index 300b8728f8..2b1321201d 100644
--- a/rtc_base/BUILD.gn
+++ b/rtc_base/BUILD.gn
@@ -801,8 +801,6 @@ rtc_static_library("rtc_base") {
     "socketaddresspair.h",
     "socketfactory.h",
     "socketserver.h",
-    "socketstream.cc",
-    "socketstream.h",
     "ssladapter.cc",
     "ssladapter.h",
     "sslcertificate.cc",
@@ -966,6 +964,8 @@ rtc_source_set("rtc_base_tests_utils") {
     "proxyserver.h",
     "sigslottester.h",
     "sigslottester.h.pump",
+    "socketstream.cc",
+    "socketstream.h",
     "testbase64.h",
     "testcertificateverifier.h",
     "testclient.cc",