diff --git a/strongswan.spec b/strongswan.spec
index 542e15e..f89449a 100644
--- a/strongswan.spec
+++ b/strongswan.spec
@@ -14,6 +14,7 @@ Patch3:         strongswan-5.6.2-CVE-2018-5388.patch
 # only needed for pre-release versions
 #BuildRequires:  autoconf automake
 
+BuildRequires:  gcc
 BuildRequires:  systemd-devel
 BuildRequires:  gmp-devel
 BuildRequires:  libcurl-devel