diff --git a/base/applications/cmdutils/reg/copy.c b/base/applications/cmdutils/reg/copy.c
index 34abf8ade18..208adc46e00 100644
--- a/base/applications/cmdutils/reg/copy.c
+++ b/base/applications/cmdutils/reg/copy.c
@@ -163,6 +163,12 @@ int reg_copy(int argc, WCHAR *argvW[])
         }
     }
 
+    if (src.root == dest.root && !lstrcmpiW(src.subkey, dest.subkey))
+    {
+        output_message(STRING_COPY_SRC_DEST_SAME);
+        return 1;
+    }
+
     return run_copy(&src, &dest, recurse, force);
 
 invalid:
diff --git a/base/applications/cmdutils/reg/reg.c b/base/applications/cmdutils/reg/reg.c
index 7099cba594e..0c8eb47863c 100644
--- a/base/applications/cmdutils/reg/reg.c
+++ b/base/applications/cmdutils/reg/reg.c
@@ -206,7 +206,7 @@ WCHAR *build_subkey_path(WCHAR *path, DWORD path_len, WCHAR *subkey_name, DWORD
 
 WCHAR *get_long_key(HKEY root, WCHAR *path)
 {
-    int i, len, path_len;
+    int i, len;
     WCHAR *long_key;
 
     for (i = 0; i < ARRAY_SIZE(root_rels); i++)
@@ -224,15 +224,7 @@ WCHAR *get_long_key(HKEY root, WCHAR *path)
         return long_key;
     }
 
-    path_len = lstrlenW(path);
-
-    if (path[path_len - 1] == '\\')
-    {
-        path[path_len - 1] = 0;
-        path_len--;
-    }
-
-    len += path_len + 1; /* add one for the concatenating backslash */
+    len += lstrlenW(path) + 1; /* add one for the concatenating backslash */
     long_key = malloc((len + 1) * sizeof(WCHAR));
     swprintf(long_key, L"%s\\%s", root_rels[i].long_name, path);
     return long_key;
@@ -240,6 +232,8 @@ WCHAR *get_long_key(HKEY root, WCHAR *path)
 
 BOOL parse_registry_key(const WCHAR *key, HKEY *root, WCHAR **path)
 {
+    WCHAR *p;
+
     if (!sane_path(key))
         return FALSE;
 
@@ -263,6 +257,9 @@ BOOL parse_registry_key(const WCHAR *key, HKEY *root, WCHAR **path)
         return FALSE;
     }
 
+    p = *path + lstrlenW(*path) - 1;
+    if (*p == '\\') *p = 0;
+
     return TRUE;
 }
 
diff --git a/base/applications/cmdutils/reg/resource.h b/base/applications/cmdutils/reg/resource.h
index b3f660ca13b..b7afad26d22 100644
--- a/base/applications/cmdutils/reg/resource.h
+++ b/base/applications/cmdutils/reg/resource.h
@@ -61,6 +61,9 @@
 #define STRING_OVERWRITE_VALUE        205
 #define STRING_INVALID_CMDLINE        206
 
+/* copy.c */
+#define STRING_COPY_SRC_DEST_SAME     250
+
 /* delete.c */
 #define STRING_DELETE_VALUE           300
 #define STRING_DELETE_VALUEALL        301
diff --git a/sdk/tools/winesync/reg.cfg b/sdk/tools/winesync/reg.cfg
index 351e3803ee8..44d7c5205ee 100644
--- a/sdk/tools/winesync/reg.cfg
+++ b/sdk/tools/winesync/reg.cfg
@@ -4,4 +4,4 @@ directories:
 files:
   programs/reg/resource.h: base/applications/cmdutils/reg/resource.h
 tags:
-  wine: 8d9a228e99e1252a0d82c88e6a64635548c478a6
+  wine: 0abc002a3e232be3445241e435ef17ac89d6c947