diff --git a/reactos/lib/crt/misc/environ.c b/reactos/lib/crt/misc/environ.c
index 0625a791b3e..07ec5c99eb3 100644
--- a/reactos/lib/crt/misc/environ.c
+++ b/reactos/lib/crt/misc/environ.c
@@ -178,6 +178,7 @@ char **DuplicateEnvironment(char **original_environment, int wide)
          return original_environment;
       }
    }
+   *newenvptr = NULL;
 
    return newenv;
 }