diff --git a/yast2-ldap.spec b/yast2-ldap.spec
index bf9e31e..c707d04 100644
--- a/yast2-ldap.spec
+++ b/yast2-ldap.spec
@@ -47,7 +47,7 @@ an LDAP server.
 %setup -n %{name}-%{version}
 
 %build
-CFLAGS="$CFLAGS -I/usr/include"
+CXXFLAGS="$CXXFLAGS -I/usr/include"
 %yast_build
 
 %install