diff --git a/srcpkgs/xwininfo/template b/srcpkgs/xwininfo/template
index 3074be855e2..d5f1aa6353d 100644
--- a/srcpkgs/xwininfo/template
+++ b/srcpkgs/xwininfo/template
@@ -15,4 +15,5 @@ long_desc="
 Add_dependency run glibc
 Add_dependency run libxcb
 Add_dependency build pkg-config
+Add_dependency build libX11-devel
 Add_dependency build libxcb-devel