diff --git a/webrtc/modules/desktop_capture/BUILD.gn b/webrtc/modules/desktop_capture/BUILD.gn
index 374d717186..f42ceecd68 100644
--- a/webrtc/modules/desktop_capture/BUILD.gn
+++ b/webrtc/modules/desktop_capture/BUILD.gn
@@ -124,7 +124,7 @@ if (use_desktop_capture_differ_sse2) {
   # Have to be compiled as a separate target because it needs to be compiled
   # with SSE2 enabled.
   source_set("desktop_capture_differ_sse2") {
-    visibility = ":*"
+    visibility = [ ":*" ]
     sources = [
       "differ_block_sse2.cc",
       "differ_block_sse2.h",