diff --git a/lib/llr_to_prob.h b/lib/llr_to_prob.h
index 5076c9d..27ff300 100644
--- a/lib/llr_to_prob.h
+++ b/lib/llr_to_prob.h
@@ -18,13 +18,13 @@
  * Boston, MA 02110-1301, USA.
  */
 
-namespace gr {
-namespace digitalhf {
-
 #include <array>
 #include <cmath>
 #include <cstdint>
 
+namespace gr {
+namespace digitalhf {
+
 template<size_t N>
 class llr_to_prob {
 public: