diff --git a/core/libs/prx/libc/src/AllocatingStrings.cpp b/core/libs/prx/libc/src/AllocatingStrings.cpp
index 74779c475..2e91cc215 100644
--- a/core/libs/prx/libc/src/AllocatingStrings.cpp
+++ b/core/libs/prx/libc/src/AllocatingStrings.cpp
@@ -1,20 +1,15 @@
 #include "prx/libc/include/ApplicationHeap.hpp"
 #include "prx/libc/include/General.hpp"
+#include "SceTypes.hpp"
 #include <cerrno>
 #include <cstdarg>
-#include <cstdio>
-#include <cstdlib>
 #include <cstring>
-#include <memory>
 #include <new>
-#include <string>
-
-#ifdef _WIN32
-#include "prx/libc/include/WindowsFormatting.hpp"
-#endif
 
 extern "C" {
 
+int APS5_VABI vasprintf_nid_postfix(char** destination, const char* format, VaList* args);
+
 char* APS5_VABI strndup_nid_postfix(const char* source, std::size_t limit) {
     std::size_t length = 0;
     while (length < limit && source[length] != '\0') ++length;
@@ -35,9 +30,6 @@ char* APS5_VABI strdup_nid_postfix(const char* source) {
 }
 
 int APS5_VABI asprintf_nid_postfix(char** destination, const char* format, ...) {
-    if (!destination) { errno = 22; return -1; }
-    *destination = nullptr;
-    if (!format) { errno = 22; return -1; }
 #ifdef _WIN32
     __builtin_sysv_va_list args;
     __builtin_sysv_va_start(args, format);
@@ -45,36 +37,7 @@ int APS5_VABI asprintf_nid_postfix(char** destination, const char* format, ...)
     std::va_list args;
     va_start(args, format);
 #endif
-    int result = -1;
-    try {
-#ifdef _WIN32
-        std::string text;
-        const int count = LibcDetail::FormatWindows(nullptr, 0, format, args, &text);
-        const char* source = text.c_str();
-#else
-        char* text = nullptr;
-        const int count = ::vasprintf(&text, format, args);
-        std::unique_ptr<char, decltype(&std::free)> owner(text, std::free);
-        const char* source = text;
-#endif
-        if (count >= 0) {
-            auto* output = static_cast<char*>(ApplicationHeapAllocate_nid_no_patch(static_cast<std::size_t>(count) + 1));
-            if (output) {
-                std::memcpy(output, source, static_cast<std::size_t>(count) + 1);
-                *destination = output;
-                result = count;
-            } else errno = 12;
-        }
-    } catch (const std::bad_alloc&) {
-        errno = 12;
-    } catch (...) {
-#ifdef _WIN32
-        __builtin_sysv_va_end(args);
-#else
-        va_end(args);
-#endif
-        throw;
-    }
+    const int result = vasprintf_nid_postfix(destination, format, reinterpret_cast<VaList*>(args));
 #ifdef _WIN32
     __builtin_sysv_va_end(args);
 #else
diff --git a/core/libs/tests/Formatting.cpp b/core/libs/tests/Formatting.cpp
index 0b83a58c1..ca97bddf2 100644
--- a/core/libs/tests/Formatting.cpp
+++ b/core/libs/tests/Formatting.cpp
@@ -1,5 +1,9 @@
 #include "SceTypes.hpp"
+#include "prx/libc/include/ApplicationHeap.hpp"
+#include "prx/libc/include/GuestHeap.hpp"
 #include <algorithm>
+#include <array>
+#include <cstdlib>
 #include <cstring>
 #include <stdexcept>
 #include <cstdint>
@@ -15,6 +19,8 @@ int APS5_VABI vsnprintf_nid_postfix(char*, size_t, const char*, VaList*);
 int APS5_VABI vsnprintf_s_nid_postfix(char*, size_t, const char*, VaList*);
 int APS5_VABI vsscanf_s_nid_postfix(const char*, const char*, VaList*);
 int APS5_VABI vprintf_nid_postfix(const char*, VaList*);
+int APS5_VABI asprintf_nid_postfix(char**, const char*, ...);
+void APS5_VABI free_nid_postfix(void*);
 }
 
 static void Require(bool condition) {
@@ -228,4 +234,17 @@ __attribute__((noinline)) static void APS5_VABI RunChecks() {
     std::puts("Formatting checks passed: 10000 iterations");
 }
 
-int main() { RunChecks(); return CheckWidePrecision() ? 0 : 1; }
+static void* APS5_VABI Allocate(std::size_t bytes) { return GuestHeap::GuestHeapAllocate_nid_postfix(bytes); }
+static void APS5_VABI Release(void* pointer) { GuestHeap::GuestHeapFree_nid_postfix(pointer); }
+static void* APS5_VABI Unused() { std::abort(); }
+
+static void CheckAllocatingFormat() {
+    const std::array<void*, 10> api{reinterpret_cast<void*>(&Allocate), reinterpret_cast<void*>(&Release), reinterpret_cast<void*>(&Unused),
+        reinterpret_cast<void*>(&Unused), reinterpret_cast<void*>(&Unused), reinterpret_cast<void*>(&Unused), reinterpret_cast<void*>(&Unused)};
+    ApplicationHeapRegister_nid_no_patch(api.data());
+    char* allocated = nullptr;
+    Require(asprintf_nid_postfix(&allocated, "%ls:%S:%lc:%d", u"\u00e9", u"ab", 0x20ac, 7) == 11 && std::strcmp(allocated, "\xc3\xa9:ab:\xe2\x82\xac:7") == 0);
+    free_nid_postfix(allocated);
+}
+
+int main() { RunChecks(); CheckAllocatingFormat(); return CheckWidePrecision() ? 0 : 1; }