diff --git a/Userland/pro.cpp b/Userland/pro.cpp
index 4138f5568f..6cc306f317 100644
--- a/Userland/pro.cpp
+++ b/Userland/pro.cpp
@@ -43,7 +43,7 @@ public:
     {
         GenericLexer lexer(value);
 
-        lexer.consume_while([](auto c) { return is_whitespace(c); });
+        lexer.ignore_while(is_whitespace);
 
         if (lexer.consume_specific("inline")) {
             m_kind = Kind::Inline;
@@ -55,7 +55,7 @@ public:
         if (lexer.consume_specific("attachment")) {
             m_kind = Kind::Attachment;
             if (lexer.consume_specific(";")) {
-                lexer.consume_while([](auto c) { return is_whitespace(c); });
+                lexer.ignore_while(is_whitespace);
                 if (lexer.consume_specific("filename=")) {
                     m_filename = lexer.consume_quoted_string();
                 } else {
@@ -68,7 +68,7 @@ public:
         if (lexer.consume_specific("form-data")) {
             m_kind = Kind::FormData;
             while (lexer.consume_specific(";")) {
-                lexer.consume_while([](auto c) { return is_whitespace(c); });
+                lexer.ignore_while(is_whitespace);
                 if (lexer.consume_specific("name=")) {
                     m_name = lexer.consume_quoted_string();
                 } else if (lexer.consume_specific("filename=")) {