diff --git a/Libraries/LibC/locale.cpp b/Libraries/LibC/locale.cpp
index 9d6f4d65a8..d015cf7a86 100644
--- a/Libraries/LibC/locale.cpp
+++ b/Libraries/LibC/locale.cpp
@@ -8,10 +8,34 @@ static char default_decimal_point[] = ".";
 static char default_thousands_sep[] = ",";
 static char default_grouping[] = "\x03\x03";
 
+static char default_empty_string[] = "";
+static char default_empty_value = 127;
+
 static struct lconv default_locale = {
     default_decimal_point,
     default_thousands_sep,
     default_grouping,
+    default_empty_string,
+    default_empty_string,
+    default_empty_string,
+    default_empty_string,
+    default_empty_string,
+    default_empty_string,
+    default_empty_string,
+    default_empty_value,
+    default_empty_value,
+    default_empty_value,
+    default_empty_value,
+    default_empty_value,
+    default_empty_value,
+    default_empty_value,
+    default_empty_value,
+    default_empty_value,
+    default_empty_value,
+    default_empty_value,
+    default_empty_value,
+    default_empty_value,
+    default_empty_value
 };
 
 char* setlocale(int category, const char* locale)
diff --git a/Libraries/LibC/locale.h b/Libraries/LibC/locale.h
index 26b5367434..6e0208aa60 100644
--- a/Libraries/LibC/locale.h
+++ b/Libraries/LibC/locale.h
@@ -17,6 +17,27 @@ struct lconv {
     char* decimal_point;
     char* thousands_sep;
     char* grouping;
+    char* int_curr_symbol;
+    char* currency_symbol;
+    char* mon_decimal_point;
+    char* mon_thousands_sep;
+    char* mon_grouping;
+    char* positive_sign;
+    char* negative_sign;
+    char int_frac_digits;
+    char frac_digits;
+    char p_cs_precedes;
+    char p_sep_by_space;
+    char n_cs_precedes;
+    char n_sep_by_space;
+    char p_sign_posn;
+    char n_sign_posn;
+    char int_p_cs_precedes;
+    char int_p_sep_by_space;
+    char int_n_cs_precedes;
+    char int_n_sep_by_space;
+    char int_p_sign_posn;
+    char int_n_sign_posn;
 };
 
 struct lconv* localeconv();