diff --git a/common_audio/signal_processing/include/signal_processing_library.h b/common_audio/signal_processing/include/signal_processing_library.h
index 2d9fff7..294c3f7 100644
--- a/common_audio/signal_processing/include/signal_processing_library.h
+++ b/common_audio/signal_processing/include/signal_processing_library.h
@@ -36,19 +36,6 @@
 #define WEBRTC_SPL_ABS_W32(a) \
     (((int32_t)a >= 0) ? ((int32_t)a) : -((int32_t)a))
 
-#ifdef WEBRTC_ARCH_LITTLE_ENDIAN
-#define WEBRTC_SPL_GET_BYTE(a, nr)  (((int8_t *)a)[nr])
-#define WEBRTC_SPL_SET_BYTE(d_ptr, val, index) \
-    (((int8_t *)d_ptr)[index] = (val))
-#else
-#define WEBRTC_SPL_GET_BYTE(a, nr) \
-    ((((int16_t *)a)[nr >> 1]) >> (((nr + 1) & 0x1) * 8) & 0x00ff)
-#define WEBRTC_SPL_SET_BYTE(d_ptr, val, index) \
-    ((int16_t *)d_ptr)[index >> 1] = \
-    ((((int16_t *)d_ptr)[index >> 1]) \
-    & (0x00ff << (8 * ((index) & 0x1)))) | (val << (8 * ((index + 1) & 0x1)))
-#endif
-
 #define WEBRTC_SPL_MUL(a, b) \
     ((int32_t) ((int32_t)(a) * (int32_t)(b)))
 #define WEBRTC_SPL_UMUL(a, b) \
diff --git a/common_audio/signal_processing/signal_processing_unittest.cc b/common_audio/signal_processing/signal_processing_unittest.cc
index 17d8d03..146afae 100644
--- a/common_audio/signal_processing/signal_processing_unittest.cc
+++ b/common_audio/signal_processing/signal_processing_unittest.cc
@@ -30,17 +30,12 @@
     int B = 21;
     int a = -3;
     int b = WEBRTC_SPL_WORD32_MAX;
-    int nr = 2;
-    int d_ptr2 = 0;
 
     EXPECT_EQ(10, WEBRTC_SPL_MIN(A, B));
     EXPECT_EQ(21, WEBRTC_SPL_MAX(A, B));
 
     EXPECT_EQ(3, WEBRTC_SPL_ABS_W16(a));
     EXPECT_EQ(3, WEBRTC_SPL_ABS_W32(a));
-    EXPECT_EQ(0, WEBRTC_SPL_GET_BYTE(&B, nr));
-    WEBRTC_SPL_SET_BYTE(&d_ptr2, 1, nr);
-    EXPECT_EQ(65536, d_ptr2);
 
     EXPECT_EQ(-63, WEBRTC_SPL_MUL(a, B));
     EXPECT_EQ(-2147483645, WEBRTC_SPL_MUL(a, b));