diff --git a/src/audio/windib/SDL_dibaudio.c b/src/audio/windib/SDL_dibaudio.c
index 633bdc354..c20b529ae 100644
--- a/src/audio/windib/SDL_dibaudio.c
+++ b/src/audio/windib/SDL_dibaudio.c
@@ -205,7 +205,7 @@ WINWAVEOUT_OpenDevice(_THIS, const char *devname, int iscapture)
 
     while ((!valid_datatype) && (test_format)) {
         valid_datatype = 1;
-        _this->spec.format = test_format;
+        this->spec.format = test_format;
         switch (test_format) {
             case AUDIO_U8:
             case AUDIO_S16:
@@ -287,7 +287,7 @@ WINWAVEOUT_OpenDevice(_THIS, const char *devname, int iscapture)
 
     /* Create the sound buffers */
     this->hidden->mixbuf = (Uint8 *) SDL_malloc(NUM_BUFFERS * this->spec.size);
-    if (mixbuf == NULL) {
+    if (this->hidden->mixbuf == NULL) {
         WINWAVEOUT_CloseDevice(this);
         SDL_OutOfMemory();
         return 0;
diff --git a/src/audio/windx5/SDL_dx5audio.c b/src/audio/windx5/SDL_dx5audio.c
index 65a0195d4..95b9c0d72 100644
--- a/src/audio/windx5/SDL_dx5audio.c
+++ b/src/audio/windx5/SDL_dx5audio.c
@@ -485,7 +485,7 @@ DSOUND_Init(SDL_AudioDriverImpl *impl)
     SDL_memset(&ver, '\0', sizeof (OSVERSIONINFO));
     ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
     GetVersionEx(&ver);
-    if (ver.dwPlatformId == VER_PLATFORM_WIN32_NT)
+    if (ver.dwPlatformId == VER_PLATFORM_WIN32_NT) {
         if (ver.dwMajorVersion <= 4) {
             return 0;  /* NT4.0 or earlier. Disable dsound support. */
         }