diff --git a/src/cata_algo.h b/src/cata_algo.h
index 7337246f30217..a93f27ed18cbf 100644
--- a/src/cata_algo.h
+++ b/src/cata_algo.h
@@ -5,7 +5,7 @@
 #include <algorithm>
 #include <vector>
 
-namespace algo
+namespace cata
 {
 
 /**
@@ -41,6 +41,6 @@ void sort_by_rating( Iterator begin, Iterator end, RatingFunction rating_func )
     } );
 }
 
-} // namespace algo
+} // namespace cata
 
 #endif // CATA_ALGO_H
diff --git a/src/npcmove.cpp b/src/npcmove.cpp
index bb5afdfad4814..b08ee25201ded 100644
--- a/src/npcmove.cpp
+++ b/src/npcmove.cpp
@@ -2600,7 +2600,7 @@ void npc::move_away_from( const std::vector<sphere> &spheres, bool no_bashing )
         return g->m.passable( elem );
     } );
 
-    algo::sort_by_rating( escape_points.begin(), escape_points.end(), [&]( const tripoint & elem ) {
+    cata::sort_by_rating( escape_points.begin(), escape_points.end(), [&]( const tripoint & elem ) {
         const int danger = std::accumulate( spheres.begin(), spheres.end(), 0,
         [&]( const int sum, const sphere & s ) {
             return sum + std::max( s.radius - rl_dist( elem, s.center ), 0 );