diff --git a/src/libraries/System.Private.CoreLib/src/System/Globalization/NumberFormatInfo.cs b/src/libraries/System.Private.CoreLib/src/System/Globalization/NumberFormatInfo.cs
index ee7c38e7777cfd..931e4b62e5a178 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Globalization/NumberFormatInfo.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Globalization/NumberFormatInfo.cs
@@ -733,9 +733,9 @@ internal static void ValidateParseStyleInteger(NumberStyles style)
             if ((style & (InvalidNumberStyles | NumberStyles.AllowHexSpecifier)) != 0
                 && (style & ~NumberStyles.HexNumber) != 0)
             {
-                throwInvalid(style);
+                ThrowInvalid(style);
 
-                void throwInvalid(NumberStyles value)
+                static void ThrowInvalid(NumberStyles value)
                 {
                     if ((value & InvalidNumberStyles) != 0)
                     {
@@ -752,9 +752,9 @@ internal static void ValidateParseStyleFloatingPoint(NumberStyles style)
             // Check for undefined flags or hex number
             if ((style & (InvalidNumberStyles | NumberStyles.AllowHexSpecifier)) != 0)
             {
-                throwInvalid(style);
+                ThrowInvalid(style);
 
-                void throwInvalid(NumberStyles value)
+                static void ThrowInvalid(NumberStyles value)
                 {
                     if ((value & InvalidNumberStyles) != 0)
                     {