diff --git a/libreswan.spec b/libreswan.spec
index a8b1d14..ef19910 100644
--- a/libreswan.spec
+++ b/libreswan.spec
@@ -52,6 +52,7 @@ Obsoletes: openswan < %{version}-%{release}
 Provides: openswan = %{version}-%{release}
 Provides: openswan-doc = %{version}-%{release}
 
+BuildRequires:  gcc
 BuildRequires: pkgconfig hostname
 BuildRequires: bison flex
 BuildRequires: systemd-devel