diff --git a/localization/i18n/list.txt b/localization/i18n/list.txt
index ef3ce5874b..cc067c63ec 100644
--- a/localization/i18n/list.txt
+++ b/localization/i18n/list.txt
@@ -133,6 +133,7 @@ src/slic3r/Utils/Http.cpp
 src/slic3r/Utils/Process.cpp
 src/slic3r/GUI/Jobs/PrintJob.cpp
 src/libslic3r/GCode.cpp
+src/libslic3r/GCode/ToolOrdering.cpp
 src/libslic3r/ExtrusionEntity.cpp
 src/libslic3r/Flow.cpp
 src/libslic3r/Format/AMF.cpp
diff --git a/src/libslic3r/GCode/ToolOrdering.cpp b/src/libslic3r/GCode/ToolOrdering.cpp
index 289e1f02e1..f8af9fc9da 100644
--- a/src/libslic3r/GCode/ToolOrdering.cpp
+++ b/src/libslic3r/GCode/ToolOrdering.cpp
@@ -1178,7 +1178,7 @@ void ToolOrdering::reorder_extruders_for_minimum_flush_volume(bool reorder_first
         if (nozzle_nums > 1 && !check_tpu_group(used_filaments, filament_maps, print_config)) {
             int master_extruder_id = print_config->master_extruder_id.value - 1; // to 0 based
             std::string nozzle_name = master_extruder_id == 0 ? "left" : "right";
-            std::string exception_str = _L(std::string("TPU is incompatible with AMS and must be printed seperately in the ") + nozzle_name + " nozzle.\nPlease adjust the filament group accordingly.");
+            std::string exception_str = _L("TPU is incompatible with AMS and must be printed seperately in the ") + nozzle_name + _L(" nozzle.\nPlease adjust the filament group accordingly.");
             throw Slic3r::RuntimeError(exception_str);
         }
     }
diff --git a/src/libslic3r/Print.cpp b/src/libslic3r/Print.cpp
index cb183f66e2..fbd8ca6d95 100644
--- a/src/libslic3r/Print.cpp
+++ b/src/libslic3r/Print.cpp
@@ -2172,7 +2172,7 @@ void Print::process(long long *time_cost_with_cache, bool use_cache)
             if (!ToolOrdering::check_tpu_group(used_filaments, filament_maps, &m_config)) {
                 int master_extruder_id = m_config.master_extruder_id.value - 1; // to 0 based
                 std::string nozzle_name = master_extruder_id == 0 ? "left" : "right";
-                std::string exception_str = L(std::string("TPU is incompatible with AMS and must be printed seperately in the ") + nozzle_name + " nozzle.\nPlease adjust the filament group accordingly.");
+                std::string exception_str = L("TPU is incompatible with AMS and must be printed seperately in the ") + nozzle_name + L(" nozzle.\nPlease adjust the filament group accordingly.");
                 throw Slic3r::RuntimeError(exception_str);
             }
 
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 491432f246..aac69feaf1 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -5892,7 +5892,7 @@ void PrintConfigDef::init_fff_params()
 
     def = this->add("prime_tower_enable_framework", coBool);
     def->label = L("Internal ribs");
-    def->tooltip = L("");
+    def->tooltip = L("Enable internal ribs to increase the stability of the prime tower.");
     def->mode = comSimple;
     def->set_default_value(new ConfigOptionBool(false));