diff --git a/core/libs/prx/libc/src/Strings.cpp b/core/libs/prx/libc/src/Strings.cpp
index bf2c2e872..851ae3594 100644
--- a/core/libs/prx/libc/src/Strings.cpp
+++ b/core/libs/prx/libc/src/Strings.cpp
@@ -423,19 +423,19 @@ long double APS5_VABI wcstold_nid_postfix(const char16_t* str, char16_t** endptr
 }
 
 long long APS5_VABI wcstol_nid_postfix(const char16_t* str, char16_t** endptr, int base) {
-    return ParseAsciiPrefix(str, endptr, [base](const char* text, char** end) { return std::strtoll(text, end, base); });
+    return ParseAsciiPrefix(str, endptr, [base](const char* text, char** end) { return StopAtBinaryPrefix_nid_no_patch(text, end, base) ? 0LL : std::strtoll(text, end, base); });
 }
 
 long long APS5_VABI wcstoll_nid_postfix(const char16_t* str, char16_t** endptr, int base) {
-    return ParseAsciiPrefix(str, endptr, [base](const char* text, char** end) { return std::strtoll(text, end, base); });
+    return ParseAsciiPrefix(str, endptr, [base](const char* text, char** end) { return StopAtBinaryPrefix_nid_no_patch(text, end, base) ? 0LL : std::strtoll(text, end, base); });
 }
 
 unsigned long long APS5_VABI wcstoul_nid_postfix(const char16_t* str, char16_t** endptr, int base) {
-    return ParseAsciiPrefix(str, endptr, [base](const char* text, char** end) { return std::strtoull(text, end, base); });
+    return ParseAsciiPrefix(str, endptr, [base](const char* text, char** end) { return StopAtBinaryPrefix_nid_no_patch(text, end, base) ? 0ULL : std::strtoull(text, end, base); });
 }
 
 unsigned long long APS5_VABI wcstoull_nid_postfix(const char16_t* str, char16_t** endptr, int base) {
-    return ParseAsciiPrefix(str, endptr, [base](const char* text, char** end) { return std::strtoull(text, end, base); });
+    return ParseAsciiPrefix(str, endptr, [base](const char* text, char** end) { return StopAtBinaryPrefix_nid_no_patch(text, end, base) ? 0ULL : std::strtoull(text, end, base); });
 }
 
 int APS5_VABI wcscoll_nid_postfix(const char16_t* first, const char16_t* second) {
diff --git a/core/libs/tests/GuestWideStrings.cpp b/core/libs/tests/GuestWideStrings.cpp
index e08349ab4..2e01b4d33 100644
--- a/core/libs/tests/GuestWideStrings.cpp
+++ b/core/libs/tests/GuestWideStrings.cpp
@@ -2,6 +2,7 @@
 #include <climits>
 #include <cstddef>
 #include <cstdlib>
+#include <initializer_list>
 
 extern "C" {
 const char16_t* APS5_VABI wmemchr_nid_postfix(const char16_t* s, char16_t c, std::size_t n);
@@ -125,6 +126,14 @@ int main() {
     require(wcstoull_nid_postfix(u"18446744073709551615", nullptr, 10) == ULLONG_MAX);
     const char16_t* letters = u"abc";
     require(wcstol_nid_postfix(letters, &end, 10) == 0 && end == letters);
+    const char16_t* binary = u" -0b101";
+    for (const int base : {0, 2}) {
+        require(wcstol_nid_postfix(binary, &end, base) == 0 && end == binary + 3);
+        require(wcstoll_nid_postfix(binary, &end, base) == 0 && end == binary + 3);
+        require(wcstoul_nid_postfix(binary, &end, base) == 0 && end == binary + 3);
+        require(wcstoull_nid_postfix(binary, &end, base) == 0 && end == binary + 3);
+    }
+    require(wcstoll_nid_postfix(binary + 2, &end, 16) == 0xb101 && end == binary + 7);
 
     const char16_t* scientific = u"3.5e2!";
     require(wcstod_nid_postfix(scientific, &end) == 350.0 && end == scientific + 5);