diff --git a/free42.spec b/free42.spec
index 594009d..f4c106d 100644
--- a/free42.spec
+++ b/free42.spec
@@ -8,6 +8,7 @@ License:        GPLv2 and MIT
 Summary:        42S Calculator Simulator
 Source:         http://www.thomasokken.com/free42/upstream/free42-nologo-%{version}.tgz
 
+BuildRequires:  gcc-c++
 BuildRequires:  libX11-devel
 BuildRequires:  libXmu-devel
 BuildRequires:  gtk2-devel