1 files changed, 3 insertions, 1 deletions

diff --git a/win32/env.c b/win32/env.c
index 21b5f3d2f..f8d231a8f 100644
--- a/win32/env.c
+++ b/win32/env.c
@@ -101,9 +101,11 @@ char **env_setenv(char **env, const char *name)
                 free(env[i]);
                 if (*eq)
                         env[i] = xstrdup(name);
-                else
+                else {
                         for (; env[i]; i++)
                                 env[i] = env[i+1];
+                        SetEnvironmentVariable(name, NULL);
+                }
         }
         return env;
 }