diff --git a/src/ComputingTasks.cc b/src/ComputingTasks.cc
index c5f7634b..1b19d922 100644
--- a/src/ComputingTasks.cc
+++ b/src/ComputingTasks.cc
@@ -1469,7 +1469,7 @@ EstimatedParamsStatement::writeJsonOutput(ostream &output) const
           break;
         }
 
-      output << ", \"initval\": \"";
+      output << ", \"init_val\": \"";
       it->init_val->writeJsonOutput(output, {}, {});
       output << "\", \"lower_bound\": \"";
       it->low_bound->writeJsonOutput(output, {}, {});
diff --git a/src/NumericalInitialization.cc b/src/NumericalInitialization.cc
index 3d4d24a1..80c1abd6 100644
--- a/src/NumericalInitialization.cc
+++ b/src/NumericalInitialization.cc
@@ -233,7 +233,7 @@ InitValStatement::writeOutput(ostream &output, const string &basename, bool mini
 void
 InitValStatement::writeJsonOutput(ostream &output) const
 {
-  output << "{\"statementName\": \"init_val\", \"vals\": [";
+  output << "{\"statementName\": \"initval\", \"vals\": [";
   writeJsonInitValues(output);
   output << "]}";
 }