diff --git a/environment-modules.spec b/environment-modules.spec
index f245306..37e2387 100644
--- a/environment-modules.spec
+++ b/environment-modules.spec
@@ -10,6 +10,7 @@ License:        GPLv2+
 URL:            http://modules.sourceforge.net/
 Source0:        http://downloads.sourceforge.net/modules/modules-%{version}.tar.bz2
 
+BuildRequires:  gcc
 BuildRequires:  tcl-devel, tclx-devel, libX11-devel
 BuildRequires:  dejagnu, sed, procps, hostname, man, less
 Requires:       tcl, sed, procps, man, less