diff --git a/src/utils/variable-spinbox.cpp b/src/utils/variable-spinbox.cpp
index f4cea0fb..bbfd55dd 100644
--- a/src/utils/variable-spinbox.cpp
+++ b/src/utils/variable-spinbox.cpp
@@ -100,6 +100,12 @@ void GenericVaraiableSpinbox::setSuffix(const QString &suffix)
 	_fixedValueDouble->setSuffix(suffix);
 }
 
+void GenericVaraiableSpinbox::specialValueText(const QString &text)
+{
+	_fixedValueInt->setSpecialValueText(text);
+	_fixedValueDouble->setSpecialValueText(text);
+}
+
 void GenericVaraiableSpinbox::SetFixedValue(int value)
 {
 	_numberInt._value = value;
diff --git a/src/utils/variable-spinbox.hpp b/src/utils/variable-spinbox.hpp
index 53852afe..fee72802 100644
--- a/src/utils/variable-spinbox.hpp
+++ b/src/utils/variable-spinbox.hpp
@@ -17,10 +17,12 @@ public:
 
 	void setMinimum(double value);
 	void setMaximum(double value);
-	//void setValue(double value);
+
 	void setPrefix(const QString &prefix);
 	void setSuffix(const QString &suffix);
 
+	void specialValueText(const QString &text);
+
 public slots:
 	void SetFixedValue(int);
 	void SetFixedValue(double);