diff --git a/src/libs/antares/study/parts/short-term-storage/container.cpp b/src/libs/antares/study/parts/short-term-storage/container.cpp
index d94effd421..73d3a611f5 100644
--- a/src/libs/antares/study/parts/short-term-storage/container.cpp
+++ b/src/libs/antares/study/parts/short-term-storage/container.cpp
@@ -107,12 +107,13 @@ static void loadHours(const std::string& hoursStr, AdditionalConstraints& additi
     }
 }
 
-static void readRHS(AdditionalConstraints& additionalConstraints,
-                    const fs::path& parentPath)
+static bool readRHS(AdditionalConstraints& additionalConstraints,
+                    const fs::path& rhsPath)
 {
-    loadFile(parentPath / ("rhs_" + additionalConstraints.name + ".txt"),
-             additionalConstraints.rhs);
-    fillIfEmpty(additionalConstraints.rhs, 0.0);
+    const auto ret = loadFile(rhsPath,
+                              additionalConstraints.rhs);
+    if (ret) { fillIfEmpty(additionalConstraints.rhs, 0.0); }
+    return ret;
 }
 
 bool STStorageInput::loadAdditionalConstraints(const fs::path& parentPath)
@@ -154,7 +155,13 @@ bool STStorageInput::loadAdditionalConstraints(const fs::path& parentPath)
             }
         }
 
-        readRHS(additionalConstraints, parentPath);
+        if (const auto rhsPath = parentPath / (
+                                     "rhs_" + additionalConstraints.name
+                                     + ".txt"); !readRHS(additionalConstraints, rhsPath))
+        {
+            logs.error() << "Error while reading rhs file: " << rhsPath;
+            return false;
+        }
         if (auto [ok, error_msg] = additionalConstraints.validate(); !ok)
         {
             logs.error() << "Invalid constraint in section: " << section->name;
diff --git a/src/tests/src/libs/antares/study/short-term-storage-input/short-term-storage-input-output.cpp b/src/tests/src/libs/antares/study/short-term-storage-input/short-term-storage-input-output.cpp
index f5d3de3eef..67a6fc7d52 100644
--- a/src/tests/src/libs/antares/study/short-term-storage-input/short-term-storage-input-output.cpp
+++ b/src/tests/src/libs/antares/study/short-term-storage-input/short-term-storage-input-output.cpp
@@ -804,7 +804,7 @@ BOOST_AUTO_TEST_CASE(loadAdditionalConstraints_MalformedRhsFile)
 
     std::ofstream iniFile(testPath / "additional-constraints.ini");
     iniFile << "[constraint1]\n";
-    iniFile << "cluster=ClusterA\n";
+    iniFile << "cluster=cluster1\n";
     iniFile << "variable=injection\n";
     iniFile << "operator=less\n";
     iniFile << "hours=[1,2,3]\n";
@@ -816,12 +816,14 @@ BOOST_AUTO_TEST_CASE(loadAdditionalConstraints_MalformedRhsFile)
 
     ShortTermStorage::STStorageInput storageInput;
     ShortTermStorage::STStorageCluster cluster;
-    cluster.id = "ClusterA";
+    cluster.id = "cluster1";
     storageInput.storagesByIndex.push_back(cluster);
 
     bool result = storageInput.loadAdditionalConstraints(testPath);
     BOOST_CHECK_EQUAL(result, false);
-
+    /*"Error while reading rhs file: " << "rhs_" << additionalConstraints.name
+    <<
+    ".txt";*/
     std::filesystem::remove_all(testPath);
 }
 
@@ -832,7 +834,7 @@ BOOST_AUTO_TEST_CASE(loadAdditionalConstraints_IncompleteRhsFile)
 
     std::ofstream iniFile(testPath / "additional-constraints.ini");
     iniFile << "[constraint1]\n";
-    iniFile << "cluster=ClusterA\n";
+    iniFile << "cluster=cluster1\n";
     iniFile << "variable=injection\n";
     iniFile << "operator=less\n";
     iniFile << "hours=[1,2,3]\n";
@@ -847,7 +849,7 @@ BOOST_AUTO_TEST_CASE(loadAdditionalConstraints_IncompleteRhsFile)
 
     ShortTermStorage::STStorageInput storageInput;
     ShortTermStorage::STStorageCluster cluster;
-    cluster.id = "ClusterA";
+    cluster.id = "cluster1";
     storageInput.storagesByIndex.push_back(cluster);
 
     bool result = storageInput.loadAdditionalConstraints(testPath);