diff --git a/include/evalhyd/utils.hpp b/include/evalhyd/utils.hpp
index 016e986fbc51adba8f7192e85cd240147381a27b..ff4bcd274ba74b518bcf3685dc9ced40235e484c 100644
--- a/include/evalhyd/utils.hpp
+++ b/include/evalhyd/utils.hpp
@@ -40,7 +40,7 @@ namespace evalhyd
             );
 
             // return a boolean-like array
-            return q2 > thr;
+            return q2 >= thr;
         }
 
         /// Determine whether flows are strictly lower than given threshold(s)
@@ -72,7 +72,7 @@ namespace evalhyd
             );
 
             // return a boolean-like array
-            return q2 < thr;
+            return q2 <= thr;
         }
     }
 }