diff --git a/win32/_tfwopen.cpp b/win32/_tfwopen.cpp
index dbd703ac..8e328aca 100644
--- a/win32/_tfwopen.cpp
+++ b/win32/_tfwopen.cpp
@@ -232,6 +232,7 @@ extern "C" int _twopen(const char *filename, int oflag, int pmode) {
 extern "C" void _twfullpath(char* dst, const char* src, int len) {
     wchar_t *resolved = _wfullpath(NULL, Utf8ToWide(src), MAX_PATH);
     strncpy(dst, WideToUtf8(resolved), len);
+    free(resolved);
     dst[len - 1] = '\0';
     return;
 }