diff --git a/src/MuiLanguage.c b/src/MuiLanguage.c
index 944b8827f..e2a22cac7 100644
--- a/src/MuiLanguage.c
+++ b/src/MuiLanguage.c
@@ -445,15 +445,19 @@ int LoadLngStringW(UINT uID, LPWSTR lpBuffer, int nBufferMax)
 //
 //  LoadLngStringW2MB()
 //
-static WCHAR s_tmpStringBuffer[512];
-
-ptrdiff_t LoadLngStringW2MB(UINT uID, LPSTR lpBuffer, int nBufferMax)
+int LoadLngStringW2MB(UINT uID, LPSTR lpBuffer, int nBufferMax)
 {
-    const int nLen = LoadStringW(Globals.hLngResContainer, uID, s_tmpStringBuffer, COUNTOF(s_tmpStringBuffer));
-    if (nLen == 0) {
-        LoadStringW(Globals.hInstance, uID, s_tmpStringBuffer, COUNTOF(s_tmpStringBuffer));
+    int len = 0;
+    WCHAR * const pBuffer = (WCHAR *)AllocMem(sizeof(WCHAR) * nBufferMax, HEAP_ZERO_MEMORY);
+    if (pBuffer) {
+        const int nLen = LoadStringW(Globals.hLngResContainer, uID, pBuffer, nBufferMax);
+        if (nLen == 0) {
+            LoadStringW(Globals.hInstance, uID, pBuffer, nBufferMax);
+        }
+        len = WideCharToMultiByte(Encoding_SciCP, 0, pBuffer, -1, lpBuffer, nBufferMax, NULL, NULL);
+        FreeMem(pBuffer);
     }
-    return WideCharToMultiByteEx(CP_UTF8, 0, s_tmpStringBuffer, -1, lpBuffer, nBufferMax, NULL, NULL);
+    return len;
 }
 
 //=============================================================================
@@ -473,7 +477,7 @@ int LoadLngStringA(UINT uID, LPSTR lpBuffer, int nBufferMax)
 //
 int FormatLngStringW(LPWSTR lpOutput, int nOutput, UINT uIdFormat, ...)
 {
-    WCHAR* pBuffer = AllocMem(sizeof(WCHAR) * nOutput, HEAP_ZERO_MEMORY);
+    WCHAR* const pBuffer = AllocMem(sizeof(WCHAR) * nOutput, HEAP_ZERO_MEMORY);
     if (pBuffer) {
         if (LoadLngStringW(uIdFormat, pBuffer, nOutput)) {
             StringCchVPrintfW(lpOutput, nOutput, pBuffer, (LPVOID)((PUINT_PTR)& uIdFormat + 1));
@@ -490,7 +494,7 @@ int FormatLngStringW(LPWSTR lpOutput, int nOutput, UINT uIdFormat, ...)
 //
 int FormatLngStringA(LPSTR lpOutput, int nOutput, UINT uIdFormat, ...)
 {
-    CHAR* pBuffer = AllocMem(sizeof(CHAR) * nOutput, HEAP_ZERO_MEMORY);
+    CHAR* const pBuffer = AllocMem(sizeof(CHAR) * nOutput, HEAP_ZERO_MEMORY);
     if (pBuffer) {
         if (LoadLngStringA(uIdFormat, pBuffer, nOutput)) {
             StringCchVPrintfA(lpOutput, nOutput, pBuffer, (LPVOID)((PUINT_PTR)& uIdFormat + 1));
diff --git a/src/MuiLanguage.h b/src/MuiLanguage.h
index c57f5219f..7d8e8b8d1 100644
--- a/src/MuiLanguage.h
+++ b/src/MuiLanguage.h
@@ -55,7 +55,7 @@ int LoadLngStringW(UINT uID, LPWSTR lpBuffer, int nBufferMax);
 int LoadLngStringA(UINT uID, LPSTR lpBuffer, int nBufferMax);
 int FormatLngStringW(LPWSTR lpOutput, int nOutput, UINT uIdFormat, ...);
 int FormatLngStringA(LPSTR lpOutput, int nOutput, UINT uIdFormat, ...);
-ptrdiff_t LoadLngStringW2MB(UINT uID, LPSTR lpBuffer, int nBufferMax);
+int LoadLngStringW2MB(UINT uID, LPSTR lpBuffer, int nBufferMax);
 
 #define GetLngString(id,pb,cb) LoadLngStringW((id),(pb),(cb))
 #define GetLngStringA(id,pb,cb) LoadLngStringA((id),(pb),(cb))
diff --git a/src/Notepad3.c b/src/Notepad3.c
index 9efec6e32..622145ba3 100644
--- a/src/Notepad3.c
+++ b/src/Notepad3.c
@@ -6939,18 +6939,15 @@ void HandleDWellStartEnd(const DocPos position, const UINT uid)
                     break;
                 }
 
-                WCHAR wchCalltipAdd[SMALL_BUFFER] = { L'\0' };
+                CHAR chCalltipAdd[LARGE_BUFFER] = { L'\0' };
                 if (StrStrIA(chText, "file:") == chText) {
-                    GetLngString(IDS_MUI_URL_OPEN_FILE, wchCalltipAdd, COUNTOF(wchCalltipAdd));
+                    GetLngStringW2MB(IDS_MUI_URL_OPEN_FILE, chCalltipAdd, COUNTOF(chCalltipAdd));
                 } else {
-                    GetLngString(IDS_MUI_URL_OPEN_BROWSER, wchCalltipAdd, COUNTOF(wchCalltipAdd));
+                    GetLngStringW2MB(IDS_MUI_URL_OPEN_BROWSER, chCalltipAdd, COUNTOF(chCalltipAdd));
                 }
-                CHAR  chAdd[LARGE_BUFFER] = { L'\0' };
-                WideCharToMultiByte(Encoding_SciCP, 0, wchCalltipAdd, -1, chAdd, (int)COUNTOF(chAdd), NULL, NULL);
-
                 char chCallTip[HUGE_BUFFER] = { '\0' };
                 StringCchCatA(chCallTip, COUNTOF(chCallTip), chText);
-                StringCchCatA(chCallTip, COUNTOF(chCallTip), chAdd);
+                StringCchCatA(chCallTip, COUNTOF(chCallTip), chCalltipAdd);
                 //SciCall_CallTipSetPosition(true);
                 SciCall_CallTipShow(position, chCallTip);
                 SciCall_CallTipSetHlt(0, (int)length);