diff --git a/gflags.spec b/gflags.spec
index 993c945..2d7220d 100644
--- a/gflags.spec
+++ b/gflags.spec
@@ -8,6 +8,7 @@ License:        BSD
 URL:            https://gflags.github.io/gflags/
 Source0:	https://github.com/%{name}/%{name}/archive/v%{version}/%{name}-%{version}.tar.gz
 Patch1:         gflags-0001-Set-VERSION-property-of-library-targets-to-major.patch
+BuildRequires:  gcc-c++
 BuildRequires:  python2-setuptools
 BuildRequires:  cmake