diff --git a/inst/include/population_dynamics/fleet/fleet.hpp b/inst/include/population_dynamics/fleet/fleet.hpp
index 5226c4802..8681935df 100644
--- a/inst/include/population_dynamics/fleet/fleet.hpp
+++ b/inst/include/population_dynamics/fleet/fleet.hpp
@@ -163,7 +163,7 @@ struct Fleet : public fims_model_object::FIMSObject<Type> {
       for (size_t y = 0; y < this->nyears; y++) {
         // EigenVector declares a vector type from the Eigen library, which is
         // the expected type for TMB's dmultinom
-        using Vector = typename fims::fims::Vector<Type>;
+        using Vector = typename fims::Vector<Type>;
         Vector observed_acomp;
         Vector expected_acomp;
 
diff --git a/inst/include/population_dynamics/population/population.hpp b/inst/include/population_dynamics/population/population.hpp
index e4a057112..4697c0cb2 100644
--- a/inst/include/population_dynamics/population/population.hpp
+++ b/inst/include/population_dynamics/population/population.hpp
@@ -22,7 +22,7 @@
 #include "../../interface/interface.hpp"
 #include "../maturity/maturity.hpp"
 
-namespace fims {
+namespace fims_popdy {
 /*TODO:
  Review, add functions to evaluate, push vectors back to fleet (or point to fleet
  directly?)
@@ -86,22 +86,22 @@ struct Population : public fims_model_object::FIMSObject<Type> {
     fims::Vector<Type> expected_recruitment;      /*!< Expected recruitment */
     /// recruitment
     int recruitment_id = -999; /*!< id of recruitment model object*/
-    std::shared_ptr<RecruitmentBase<Type>>
+    std::shared_ptr<fims_popdy::RecruitmentBase<Type>>
     recruitment; /*!< shared pointer to recruitment module */
     
     // growth
     int growth_id = -999; /*!< id of growth model object*/
-    std::shared_ptr<GrowthBase<Type>>
+    std::shared_ptr<fims_popdy::GrowthBase<Type>>
     growth; /*!< shared pointer to growth module */
     
     // maturity
     int maturity_id = -999; /*!< id of maturity model object*/
-    std::shared_ptr<MaturityBase<Type>>
+    std::shared_ptr<fims_popdy::MaturityBase<Type>>
     maturity; /*!< shared pointer to maturity module */
     
     // fleet
     int fleet_id = -999; /*!< id of fleet model object*/
-    std::vector<std::shared_ptr<Fleet<Type>>>
+    std::vector<std::shared_ptr<fims_popdy::Fleet<Type>>>
     fleets; /*!< shared pointer to fleet module */
     
     // Define objective function object to be able to REPORT and ADREPORT