diff --git a/common/stringhelp.c b/common/stringhelp.c
index 9a2265258..6596c65cd 100644
--- a/common/stringhelp.c
+++ b/common/stringhelp.c
@@ -70,6 +70,22 @@ change_slashes (char *name)
 {
 #ifdef HAVE_DOSISH_SYSTEM
   char *p;
+  /* 0: don't know yet, 1: it's under wine, -1: no */
+  static int semihosted_by_wine;
+
+  /* Under wine, no change.  */
+  if (!semihosted_by_wine)
+    {
+      HMODULE hntdll = GetModuleHandle ("ntdll.dll");
+      if (hntdll
+          && GetProcAddress (hntdll, "wine_get_version"))
+        semihosted_by_wine = 1;
+      else
+        semihosted_by_wine = -1;
+    }
+
+  if (semihosted_by_wine > 0)
+    return name;