diff --git a/AK/PrintfImplementation.h b/AK/PrintfImplementation.h
index b67cdeab6a..fc46f472d5 100644
--- a/AK/PrintfImplementation.h
+++ b/AK/PrintfImplementation.h
@@ -353,10 +353,15 @@ struct PrintfImpl {
     }
     ALWAYS_INLINE int format_d(ModifierState const& state, ArgumentListRefT ap) const
     {
-        if (state.long_qualifiers >= 2)
-            return print_signed_number(m_putch, m_bufptr, NextArgument<i64>()(ap), state.always_sign, state.left_pad, state.zero_pad, state.field_width, state.has_precision, state.precision);
+        i64 number = [&]() -> i64 {
+            if (state.long_qualifiers >= 2)
+                return NextArgument<long long int>()(ap);
+            if (state.long_qualifiers == 1)
+                return NextArgument<long int>()(ap);
+            return NextArgument<int>()(ap);
+        }();
 
-        return print_signed_number(m_putch, m_bufptr, NextArgument<int>()(ap), state.always_sign, state.left_pad, state.zero_pad, state.field_width, state.has_precision, state.precision);
+        return print_signed_number(m_putch, m_bufptr, number, state.always_sign, state.left_pad, state.zero_pad, state.field_width, state.has_precision, state.precision);
     }
     ALWAYS_INLINE int format_i(ModifierState const& state, ArgumentListRefT ap) const
     {
@@ -364,9 +369,15 @@ struct PrintfImpl {
     }
     ALWAYS_INLINE int format_u(ModifierState const& state, ArgumentListRefT ap) const
     {
-        if (state.long_qualifiers >= 2)
-            return print_decimal(m_putch, m_bufptr, NextArgument<u64>()(ap), false, false, state.left_pad, state.zero_pad, state.field_width, state.has_precision, state.precision);
-        return print_decimal(m_putch, m_bufptr, NextArgument<u32>()(ap), false, false, state.left_pad, state.zero_pad, state.field_width, state.has_precision, state.precision);
+        u64 number = [&]() -> u64 {
+            if (state.long_qualifiers >= 2)
+                return NextArgument<unsigned long long int>()(ap);
+            if (state.long_qualifiers == 1)
+                return NextArgument<unsigned long int>()(ap);
+            return NextArgument<unsigned int>()(ap);
+        }();
+
+        return print_decimal(m_putch, m_bufptr, number, false, false, state.left_pad, state.zero_pad, state.field_width, state.has_precision, state.precision);
     }
     ALWAYS_INLINE int format_Q(ModifierState const& state, ArgumentListRefT ap) const
     {
@@ -390,9 +401,15 @@ struct PrintfImpl {
     }
     ALWAYS_INLINE int format_unsigned_hex(ModifierState const& state, ArgumentListRefT ap, bool uppercase) const
     {
-        if (state.long_qualifiers >= 2)
-            return print_hex(m_putch, m_bufptr, NextArgument<u64>()(ap), uppercase, state.alternate_form, state.left_pad, state.zero_pad, state.field_width, state.has_precision, state.precision);
-        return print_hex(m_putch, m_bufptr, NextArgument<u32>()(ap), uppercase, state.alternate_form, state.left_pad, state.zero_pad, state.field_width, state.has_precision, state.precision);
+        u64 number = [&]() -> u64 {
+            if (state.long_qualifiers >= 2)
+                return NextArgument<unsigned long long int>()(ap);
+            if (state.long_qualifiers == 1)
+                return NextArgument<unsigned long int>()(ap);
+            return NextArgument<unsigned int>()(ap);
+        }();
+
+        return print_hex(m_putch, m_bufptr, number, uppercase, state.alternate_form, state.left_pad, state.zero_pad, state.field_width, state.has_precision, state.precision);
     }
     ALWAYS_INLINE int format_x(ModifierState const& state, ArgumentListRefT ap) const
     {
diff --git a/Userland/Utilities/printf.cpp b/Userland/Utilities/printf.cpp
index ec1bbf9098..2210d44ca8 100644
--- a/Userland/Utilities/printf.cpp
+++ b/Userland/Utilities/printf.cpp
@@ -156,8 +156,21 @@ struct ArgvNextArgument<unsigned, V> {
 };
 
 template<typename V>
-struct ArgvNextArgument<i64, V> {
-    ALWAYS_INLINE i64 operator()(V arg) const
+struct ArgvNextArgument<long int, V> {
+    ALWAYS_INLINE long int operator()(V arg) const
+    {
+        if (arg.argc == 0)
+            return 0;
+
+        auto result = *arg.argv++;
+        --arg.argc;
+        return strtol(result, nullptr, 10);
+    }
+};
+
+template<typename V>
+struct ArgvNextArgument<long long int, V> {
+    ALWAYS_INLINE long long int operator()(V arg) const
     {
         if (arg.argc == 0)
             return 0;
@@ -169,8 +182,21 @@ struct ArgvNextArgument<i64, V> {
 };
 
 template<typename V>
-struct ArgvNextArgument<u64, V> {
-    ALWAYS_INLINE u64 operator()(V arg) const
+struct ArgvNextArgument<unsigned long int, V> {
+    ALWAYS_INLINE unsigned long int operator()(V arg) const
+    {
+        if (arg.argc == 0)
+            return 0;
+
+        auto result = *arg.argv++;
+        --arg.argc;
+        return strtoul(result, nullptr, 10);
+    }
+};
+
+template<typename V>
+struct ArgvNextArgument<unsigned long long int, V> {
+    ALWAYS_INLINE unsigned long long int operator()(V arg) const
     {
         if (arg.argc == 0)
             return 0;