diff --git a/9wm.spec b/9wm.spec
index 6b36906..c553ee2 100644
--- a/9wm.spec
+++ b/9wm.spec
@@ -8,6 +8,7 @@ Group:		User Interface/Desktops
 Source0:	https://github.com/9wm/9wm/archive/%{version}.tar.gz
 Source1:	9wm.desktop
 URL:		https://woozle.org/neale/src/9wm/
+BuildRequires:  gcc
 BuildRequires:	libXext-devel, libX11-devel, desktop-file-utils
 # It needs this to open a terminal.
 Requires:	xterm