diff --git a/src/tools/ts-generator/include/antares/tools/ts-generator/tsGenerationOptions.h b/src/tools/ts-generator/include/antares/tools/ts-generator/tsGenerationOptions.h
index dfc58257f5..2942964bd9 100644
--- a/src/tools/ts-generator/include/antares/tools/ts-generator/tsGenerationOptions.h
+++ b/src/tools/ts-generator/include/antares/tools/ts-generator/tsGenerationOptions.h
@@ -26,4 +26,6 @@ bool parseOptions(int, char*[], Settings&);
 std::unique_ptr<Yuni::GetOpt::Parser> createTsGeneratorParser(Settings&);
 
 bool checkOptions(Settings& options);
+bool linkTSrequired(Settings& options);
+bool thermalTSrequired(Settings& options);
 }
diff --git a/src/tools/ts-generator/linksTSgenerator.cpp b/src/tools/ts-generator/linksTSgenerator.cpp
index 62940cd377..6c16dfc0a3 100644
--- a/src/tools/ts-generator/linksTSgenerator.cpp
+++ b/src/tools/ts-generator/linksTSgenerator.cpp
@@ -226,7 +226,7 @@ void readPreproTimeSeries(std::vector<LinkTSgenerationParams>& linkList,
         fs::path sourceAreaDir = toLinksDir / sourceAreaName;
         if (! readLinkPreproTimeSeries(link, sourceAreaDir))
         {
-            logs.warning() << "Could not load all prepro data for link '"
+            logs.warning() << "Could not load all prepro/modulation data for link '"
                            << link.namesPair.first << "." << link.namesPair.second << "'";
         }
     }
diff --git a/src/tools/ts-generator/main.cpp b/src/tools/ts-generator/main.cpp
index 207617f5be..f320ee5989 100644
--- a/src/tools/ts-generator/main.cpp
+++ b/src/tools/ts-generator/main.cpp
@@ -76,44 +76,49 @@ int main(int argc, char* argv[])
     if (! checkOptions(settings))
         return 1;
 
-    // ============ THERMAL : Getting data for generating time-series =========
-    auto study = std::make_shared<Data::Study>(true);
-    Data::StudyLoadOptions studyOptions;
-    if (!study->loadFromFolder(settings.studyFolder, studyOptions))
-    {
-        logs.error() << "Invalid study given to the generator";
-        return 1;
-    }
+    bool return_code {true};
 
-    std::vector<Data::ThermalCluster*> clusters;
-    if (settings.allThermal)
-    {
-        clusters = getAllClustersToGen(study->areas, true);
-    }
-    else if (!settings.thermalListToGen.empty())
+    if (thermalTSrequired(settings))
     {
-        clusters = getClustersToGen(study->areas, settings.thermalListToGen);
-    }
-    // ========================================================================
-
-    LinksTSgenerator linksTSgenerator(settings);
-    linksTSgenerator.extractData();
-
-    // ============ TS Generation =============================================
-    MersenneTwister thermalRandom;
-    thermalRandom.reset(study->parameters.seed[Data::seedTsGenThermal]);
-
-    bool ret = TSGenerator::generateThermalTimeSeries(*study,
-                                                      clusters,
-                                                      thermalRandom);
+        // === Data for TS generation ===
+        auto study = std::make_shared<Data::Study>(true);
+        Data::StudyLoadOptions studyOptions;
+        if (!study->loadFromFolder(settings.studyFolder, studyOptions))
+        {
+            logs.error() << "Invalid study given to the generator";
+            return 1;
+        }
 
-    auto thermalSavePath = fs::path(settings.studyFolder) / "output" / FormattedTime("%Y%m%d-%H%M");
-    thermalSavePath /= "ts-generator";
-    thermalSavePath /= "thermal";
+        std::vector<Data::ThermalCluster*> clusters;
+        if (settings.allThermal)
+        {
+            clusters = getAllClustersToGen(study->areas, true);
+        }
+        else if (!settings.thermalListToGen.empty())
+        {
+            clusters = getClustersToGen(study->areas, settings.thermalListToGen);
+        }
 
-    writeThermalTimeSeries(clusters, thermalSavePath);
+        // === TS generation ===
+        MersenneTwister thermalRandom;
+        thermalRandom.reset(study->parameters.seed[Data::seedTsGenThermal]);
+        return_code = TSGenerator::generateThermalTimeSeries(*study,
+                                                             clusters,
+                                                             thermalRandom);
+
+        // === Writing generated TS on disk ===
+        auto thermalSavePath = fs::path(settings.studyFolder) / "output" / FormattedTime("%Y%m%d-%H%M");
+        thermalSavePath /= "ts-generator";
+        thermalSavePath /= "thermal";
+        writeThermalTimeSeries(clusters, thermalSavePath);
+    }
 
-    ret = linksTSgenerator.generate() && ret;
+    if (linkTSrequired(settings))
+    {
+        LinksTSgenerator linksTSgenerator(settings);
+        linksTSgenerator.extractData();
+        return_code = linksTSgenerator.generate() && return_code;
+    }
 
-    return !ret; // return 0 for success
+    return !return_code; // return 0 for success
 }
\ No newline at end of file
diff --git a/src/tools/ts-generator/tsGenerationOptions.cpp b/src/tools/ts-generator/tsGenerationOptions.cpp
index 16750a2173..48ee5b09e4 100644
--- a/src/tools/ts-generator/tsGenerationOptions.cpp
+++ b/src/tools/ts-generator/tsGenerationOptions.cpp
@@ -63,4 +63,12 @@ bool checkOptions(Settings& options)
     return true;
 }
 
+bool linkTSrequired(Settings& options)
+{
+    return options.allLinks || !options.linksListToGen.empty();
+}
+bool thermalTSrequired(Settings& options)
+{
+    return options.allThermal || !options.thermalListToGen.empty();
+}
 }
\ No newline at end of file