diff --git a/italc3.spec b/italc3.spec
index 14c3242..545aa98 100644
--- a/italc3.spec
+++ b/italc3.spec
@@ -28,6 +28,7 @@ BuildRequires:	pkgconfig(Qt5Network)
 BuildRequires:	pkgconfig(openssl)
 BuildRequires:	pkgconfig(xtst)
 BuildRequires:	pkgconfig(zlib)
+BuildRequires:	pkgconfig(xinerama)
 
 %description
 iTALC is a use- and powerful didactical tool for teachers. It lets you view