diff --git a/lib/WaveSimulation.cpp b/lib/WaveSimulation.cpp
index 7d425bc..1ccde39 100644
--- a/lib/WaveSimulation.cpp
+++ b/lib/WaveSimulation.cpp
@@ -274,10 +274,10 @@ void WaveSimulation::solve(std::string outfile, std::vector<double> &steps)
 
     for (size_t i=0; i < steps.size(); i++) {
         if (i == 0) {
-            iterations = steps[i] / this->h;
+            iterations = steps[i] / this->dt;
         }
         else {
-            iterations = (steps[i] - steps[i-1]) / this->h;
+            iterations = (steps[i] - steps[i-1]) / this->dt;
         }
 
         for (size_t j=0; j < iterations; j++) {