diff --git a/headers/os/locale/NumberFormat.h b/headers/os/locale/NumberFormat.h
index 76b483dcf9..3a123fa68f 100644
--- a/headers/os/locale/NumberFormat.h
+++ b/headers/os/locale/NumberFormat.h
@@ -44,6 +44,7 @@ public:
 			BString				GetSeparator(BNumberElement element);
 
 private:
+								BNumberFormat();
 								BNumberFormat(const BNumberFormat &other);
 
 private:
diff --git a/src/kits/locale/NumberFormat.cpp b/src/kits/locale/NumberFormat.cpp
index 90a1be4a6d..635e37f54a 100644
--- a/src/kits/locale/NumberFormat.cpp
+++ b/src/kits/locale/NumberFormat.cpp
@@ -193,6 +193,13 @@ BNumberFormat::BNumberFormat(const BLocale* locale)
 }
 
 
+BNumberFormat::BNumberFormat()
+	: BFormat()
+{
+	fPrivateData = new BNumberFormatImpl();
+}
+
+
 BNumberFormat::BNumberFormat(const BNumberFormat &other)
 	: BFormat(other)
 {