diff --git a/reactos/lib/sdk/crt/misc/environ.c b/reactos/lib/sdk/crt/misc/environ.c
index 343d8a3d412..24481939017 100644
--- a/reactos/lib/sdk/crt/misc/environ.c
+++ b/reactos/lib/sdk/crt/misc/environ.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * environ.c
  *
  * ReactOS MSVCRT.DLL Compatibility Library
@@ -64,11 +64,11 @@ int BlockEnvToEnvironA(void)
          {
             if ((*envptr = malloc(len)) == NULL)
             {
-               for (envptr--; envptr >= _environ; envptr--);
+               for (envptr--; envptr >= _environ; envptr--)
                   free(*envptr);
                FreeEnvironmentStringsA(environment_strings);
                free(_environ);
-	       __initenv = _environ = NULL;
+               __initenv = _environ = NULL;
                return -1;
             }
             memcpy(*envptr++, ptr, len);
@@ -116,11 +116,11 @@ int BlockEnvToEnvironW(void)
          {
             if ((*envptr = malloc(len * sizeof(wchar_t))) == NULL)
             {
-               for (envptr--; envptr >= _wenviron; envptr--);
+               for (envptr--; envptr >= _wenviron; envptr--)
                   free(*envptr);
                FreeEnvironmentStringsW(environment_strings);
                free(_wenviron);
-	       __winitenv = _wenviron = NULL;
+               __winitenv = _wenviron = NULL;
                return -1;
             }
             memcpy(*envptr++, ptr, len * sizeof(wchar_t));
@@ -168,7 +168,7 @@ char **DuplicateEnvironment(char **original_environment, int wide)
          *newenvptr = _strdup(*envptr++);
       if (*newenvptr == NULL)
       {
-         for (newenvptr--; newenvptr >= newenv; newenvptr--);
+         for (newenvptr--; newenvptr >= newenv; newenvptr--)
             free(*newenvptr);
          free(newenv);
          return original_environment;
diff --git a/reactos/lib/sdk/crt/stdio/stat.c b/reactos/lib/sdk/crt/stdio/stat.c
index 39df882ed34..e72df1d96f2 100644
--- a/reactos/lib/sdk/crt/stdio/stat.c
+++ b/reactos/lib/sdk/crt/stdio/stat.c
@@ -2,6 +2,7 @@
 #include <tchar.h>
 
 #define stat64_to_stat(buf64, buf)   \
+    do { \
     buf->st_dev   = (buf64)->st_dev;   \
     buf->st_ino   = (buf64)->st_ino;   \
     buf->st_mode  = (buf64)->st_mode;  \
@@ -13,6 +14,7 @@
     buf->st_atime = (time_t)(buf64)->st_atime; \
     buf->st_mtime = (time_t)(buf64)->st_mtime; \
     buf->st_ctime = (time_t)(buf64)->st_ctime; \
+    } while (0)
 
 int CDECL _tstat(const _TCHAR* path, struct _stat * buf)
 {