diff --git a/trajopt_optimizers/trajopt_sqp/include/trajopt_sqp/types.h b/trajopt_optimizers/trajopt_sqp/include/trajopt_sqp/types.h
index 1ba279ac..24f2f108 100644
--- a/trajopt_optimizers/trajopt_sqp/include/trajopt_sqp/types.h
+++ b/trajopt_optimizers/trajopt_sqp/include/trajopt_sqp/types.h
@@ -55,7 +55,7 @@ struct SQPParameters
   /** @brief NLP converges if approx_merit_improves is smaller than this */
   double min_approx_improve = 1e-4;
   /** @brief NLP converges if approx_merit_improve / best_exact_merit < min_approx_improve_frac */
-  double min_approx_improve_frac = static_cast<double>(-INFINITY);
+  double min_approx_improve_frac = std::numeric_limits<double>::lowest();
   /** @brief Max number of QP calls allowed */
   int max_iterations = 50;
 
@@ -73,7 +73,7 @@ struct SQPParameters
   /** @brief Constraints are scaled by this amount when inflated */
   double merit_coeff_increase_ratio = 10;
   /** @brief Max time in seconds that the optimizer will run */
-  double max_time = static_cast<double>(INFINITY);
+  double max_time = std::numeric_limits<double>::max();
   /** @brief Initial coefficient that is used to scale the constraints. The total constaint cost is constaint_value
    * coeff * merit_coeff */
   double initial_merit_error_coeff = 10;
diff --git a/trajopt_sco/include/trajopt_sco/optimizers.hpp b/trajopt_sco/include/trajopt_sco/optimizers.hpp
index d8f8ef63..c6e8473b 100644
--- a/trajopt_sco/include/trajopt_sco/optimizers.hpp
+++ b/trajopt_sco/include/trajopt_sco/optimizers.hpp
@@ -89,7 +89,7 @@ struct BasicTrustRegionSQPParameters
   /** @brief If model improves less than this, exit and report convergence */
   double min_approx_improve = 1e-4;
   /** @brief If model improves less than this, exit and report convergence */
-  double min_approx_improve_frac = static_cast<double>(-INFINITY);
+  double min_approx_improve_frac = std::numeric_limits<double>::lowest();
   /** @brief The max number of iterations */
   double max_iter = 50;
   /** @brief If improvement is less than improve_ratio_threshold, shrink trust region by this ratio */
@@ -105,7 +105,7 @@ struct BasicTrustRegionSQPParameters
   /** @brief Ratio that we increase coeff each time */
   double merit_coeff_increase_ratio = 10;
   /** @brief Max time in seconds that the optimizer will run */
-  double max_time = static_cast<double>(INFINITY);
+  double max_time = std::numeric_limits<double>::max();
   /** @brief Initial coefficient that is used to scale the constraints. The total constaint cost is constaint_value *
    * coeff * merit_coeff */
   double initial_merit_error_coeff = 10;