diff --git a/src/audio/SDL_audiotypecvt.c b/src/audio/SDL_audiotypecvt.c
index 7e83b52696..83ea80c40d 100644
--- a/src/audio/SDL_audiotypecvt.c
+++ b/src/audio/SDL_audiotypecvt.c
@@ -27,9 +27,9 @@
 #define NEED_SCALAR_CONVERTER_FALLBACKS 0 /* x86_64 guarantees SSE2. */
 #elif __MACOS__ && SDL_SSE2_INTRINSICS
 #define NEED_SCALAR_CONVERTER_FALLBACKS 0 /* macOS/Intel guarantees SSE2. */
-#elif defined(__ARM_ARCH) && (__ARM_ARCH >= 8) && SDL_NEON_INTRINSICS
+#elif defined(__ARM_ARCH) && (__ARM_ARCH >= 8) && defined(SDL_NEON_INTRINSICS)
 #define NEED_SCALAR_CONVERTER_FALLBACKS 0 /* ARMv8+ promise NEON. */
-#elif defined(__APPLE__) && defined(__ARM_ARCH) && (__ARM_ARCH >= 7) && SDL_NEON_INTRINSICS
+#elif defined(__APPLE__) && defined(__ARM_ARCH) && (__ARM_ARCH >= 7) && defined(SDL_NEON_INTRINSICS)
 #define NEED_SCALAR_CONVERTER_FALLBACKS 0 /* All Apple ARMv7 chips promise NEON support. */
 #endif
 
@@ -697,7 +697,7 @@ static void SDLCALL SDL_TARGETING("sse2") SDL_Convert_F32_to_S32_SSE2(SDL_AudioC
 }
 #endif
 
-#if SDL_NEON_INTRINSICS
+#ifdef SDL_NEON_INTRINSICS
 static void SDLCALL SDL_Convert_S8_to_F32_NEON(SDL_AudioCVT *cvt, SDL_AudioFormat format)
 {
     const Sint8 *src = ((const Sint8 *)(cvt->buf + cvt->len_cvt)) - 1;
@@ -1180,7 +1180,7 @@ void SDL_ChooseAudioConverters(void)
     }
 #endif
 
-#if SDL_NEON_INTRINSICS
+#ifdef SDL_NEON_INTRINSICS
     if (SDL_HasNEON()) {
         SET_CONVERTER_FUNCS(NEON);
         return;
diff --git a/src/video/SDL_stretch.c b/src/video/SDL_stretch.c
index bfcabfdea3..2d1dfdfe8e 100644
--- a/src/video/SDL_stretch.c
+++ b/src/video/SDL_stretch.c
@@ -332,13 +332,13 @@ static int scale_mat(const Uint32 *src, int src_w, int src_h, int src_pitch,
     return 0;
 }
 
-#if SDL_NEON_INTRINSICS
+#ifdef SDL_NEON_INTRINSICS
 #define CAST_uint8x8_t       (uint8x8_t)
 #define CAST_uint32x2_t      (uint32x2_t)
 #endif
 
 #if defined(__WINRT__) || defined(_MSC_VER)
-#if SDL_NEON_INTRINSICS
+#ifdef SDL_NEON_INTRINSICS
 #undef CAST_uint8x8_t
 #undef CAST_uint32x2_t
 #define CAST_uint8x8_t