diff --git a/Source/engine.cpp b/Source/engine.cpp
index ca8d97122..5196b3c95 100644
--- a/Source/engine.cpp
+++ b/Source/engine.cpp
@@ -2462,23 +2462,27 @@ BYTE *LoadFileInMem(char *pszName, int *pdwFileLen)
 	return buf;
 }
 
-void LoadFileWithMem(char *pszName, void *buf)
+DWORD LoadFileWithMem(const char *pszName, void *p)
 {
-	char *v2;  // ebx
-	char *v3;  // edi
-	int v4;    // esi
-	HANDLE a1; // [esp+Ch] [ebp-4h]
-
-	v2 = (char *)buf;
-	v3 = pszName;
-	if (!buf)
+	DWORD dwFileLen;
+	HANDLE hsFile;
+
+	/// ASSERT: assert(pszName);
+	if(p == NULL) {
 		app_fatal("LoadFileWithMem(NULL):\n%s", pszName);
-	WOpenFile(v3, &a1, 0);
-	v4 = WGetFileSize(a1, 0);
-	if (!v4)
-		app_fatal("Zero length SFILE:\n%s", v3);
-	WReadFile(a1, v2, v4);
-	WCloseFile(a1);
+	}
+
+	WOpenFile(pszName, &hsFile, FALSE);
+
+	dwFileLen = WGetFileSize(hsFile, NULL);
+	if(dwFileLen == 0) {
+		app_fatal("Zero length SFILE:\n%s", pszName);
+	}
+
+	WReadFile(hsFile, p, dwFileLen);
+	WCloseFile(hsFile);
+
+	return dwFileLen;
 }
 
 void Cl2ApplyTrans(BYTE *p, BYTE *ttbl, int nCel)
diff --git a/Source/engine.h b/Source/engine.h
index 6faab8baa..27a9f950a 100644
--- a/Source/engine.h
+++ b/Source/engine.h
@@ -44,7 +44,7 @@ void engine_debug_trap(BOOL show_cursor);
 unsigned char *DiabloAllocPtr(int dwBytes);
 void mem_free_dbg(void *p);
 BYTE *LoadFileInMem(char *pszName, int *pdwFileLen);
-void LoadFileWithMem(char *pszName, void *buf);
+DWORD LoadFileWithMem(const char *pszName, void *p);
 void Cl2ApplyTrans(BYTE *p, BYTE *ttbl, int nCel);
 void Cl2DecodeFrm1(int sx, int sy, BYTE *pCelBuff, int nCel, int nWidth, int CelSkip, int CelCap);
 void Cl2DecDatFrm1(BYTE *pDecodeTo, BYTE *pRLEBytes, int nDataSize, int nWidth);