diff --git a/linuxptp.spec b/linuxptp.spec
index 096a708..152c198 100644
--- a/linuxptp.spec
+++ b/linuxptp.spec
@@ -21,7 +21,7 @@ Source10:	https://github.com/mlichvar/linuxptp-testsuite/archive/%{testsuite_ver
 # simulator for test suite
 Source11:	https://github.com/mlichvar/clknetsim/archive/%{clknetsim_ver}/clknetsim-%{clknetsim_ver}.tar.gz
 
-BuildRequires:	systemd
+BuildRequires:	gcc gcc-c++ systemd
 
 %{?systemd_requires}