diff --git a/dll/kernel32.cpp b/dll/kernel32.cpp
index ef0e663..8e18008 100644
--- a/dll/kernel32.cpp
+++ b/dll/kernel32.cpp
@@ -1635,7 +1635,7 @@ namespace kernel32 {
 		}
 
 		const size_t copyLen = std::min(len, nSize - 1);
-		memcpy(lpFilename, stringToWideString(path.c_str()).data(), copyLen);
+		memcpy(lpFilename, stringToWideString(path.c_str()).data(), copyLen * 2);
 		if (copyLen < nSize) {
 			lpFilename[copyLen] = 0;
 		}
diff --git a/dll/msvcrt.cpp b/dll/msvcrt.cpp
index 6c3a10e..bdf5074 100644
--- a/dll/msvcrt.cpp
+++ b/dll/msvcrt.cpp
@@ -324,7 +324,21 @@ namespace msvcrt {
 	}
 
 	int WIN_ENTRY wcscpy_s(uint16_t *dest, size_t dest_size, const uint16_t *src){
-		DEBUG_LOG("STUB: wcscpy_s\n");
+		std::string src_str = wideStringToString(src);
+		DEBUG_LOG("wcscpy_s %s\n", src_str.c_str());
+		if (!dest || !src || dest_size == 0) {
+			return -1;
+		}
+
+		size_t src_len = 0;
+		while (src[src_len] != 0) src_len++;
+
+		if (src_len + 1 > dest_size) {
+			dest[0] = 0;
+			return -1; 
+		}
+
+		wstrcpy(dest, src);
 		return 0;
 	}