diff --git a/webrtc/common_audio/signal_processing/include/signal_processing_library.h b/webrtc/common_audio/signal_processing/include/signal_processing_library.h
index 72a5388fa4..2d9fff7cfc 100644
--- a/webrtc/common_audio/signal_processing/include/signal_processing_library.h
+++ b/webrtc/common_audio/signal_processing/include/signal_processing_library.h
@@ -57,8 +57,6 @@
     ((uint32_t) (uint16_t)(a) * (uint16_t)(b))
 #define WEBRTC_SPL_UMUL_32_16(a, b) \
     ((uint32_t) ((uint32_t)(a) * (uint16_t)(b)))
-#define WEBRTC_SPL_UMUL_32_16_RSFT16(a, b) \
-    ((uint32_t) ((uint32_t)(a) * (uint16_t)(b)) >> 16)
 #define WEBRTC_SPL_MUL_16_U16(a, b) \
     ((int32_t)(int16_t)(a) * (uint16_t)(b))
 #define WEBRTC_SPL_DIV(a, b) \
diff --git a/webrtc/common_audio/signal_processing/signal_processing_unittest.cc b/webrtc/common_audio/signal_processing/signal_processing_unittest.cc
index 603294be3b..17d8d0371c 100644
--- a/webrtc/common_audio/signal_processing/signal_processing_unittest.cc
+++ b/webrtc/common_audio/signal_processing/signal_processing_unittest.cc
@@ -48,7 +48,6 @@ TEST_F(SplTest, MacroTest) {
     b = WEBRTC_SPL_WORD16_MAX >> 1;
     EXPECT_EQ(1073627139u, WEBRTC_SPL_UMUL_16_16(a, b));
     EXPECT_EQ(4294918147u, WEBRTC_SPL_UMUL_32_16(a, b));
-    EXPECT_EQ(65535u, WEBRTC_SPL_UMUL_32_16_RSFT16(a, b));
     EXPECT_EQ(-49149, WEBRTC_SPL_MUL_16_U16(a, b));
 
     a = b;
diff --git a/webrtc/modules/audio_coding/codecs/isac/fix/source/arith_routines_hist.c b/webrtc/modules/audio_coding/codecs/isac/fix/source/arith_routines_hist.c
index c66be2e484..5311b3930e 100644
--- a/webrtc/modules/audio_coding/codecs/isac/fix/source/arith_routines_hist.c
+++ b/webrtc/modules/audio_coding/codecs/isac/fix/source/arith_routines_hist.c
@@ -195,7 +195,7 @@ int16_t WebRtcIsacfix_DecHistBisectMulti(int16_t *data,
     for ( ;; )
     {
       W_tmp = WEBRTC_SPL_UMUL_32_16(W_upper_MSB, *cdfPtr);
-      W_tmp += WEBRTC_SPL_UMUL_32_16_RSFT16(W_upper_LSB, *cdfPtr);
+      W_tmp += (W_upper_LSB * (*cdfPtr)) >> 16;
       sizeTmp = WEBRTC_SPL_RSHIFT_W16(sizeTmp, 1);
       if (sizeTmp == 0) {
         break;
@@ -325,7 +325,7 @@ int16_t WebRtcIsacfix_DecHistOneStepMulti(int16_t *data,
     /* start at the specified table entry */
     cdfPtr = *cdf + (*initIndex++);
     W_tmp = WEBRTC_SPL_UMUL_32_16(W_upper_MSB, *cdfPtr);
-    W_tmp += WEBRTC_SPL_UMUL_32_16_RSFT16(W_upper_LSB, *cdfPtr);
+    W_tmp += (W_upper_LSB * (*cdfPtr)) >> 16;
 
     if (streamval > W_tmp)
     {
@@ -339,7 +339,7 @@ int16_t WebRtcIsacfix_DecHistOneStepMulti(int16_t *data,
         }
 
         W_tmp = WEBRTC_SPL_UMUL_32_16(W_upper_MSB, *++cdfPtr);
-        W_tmp += WEBRTC_SPL_UMUL_32_16_RSFT16(W_upper_LSB, *cdfPtr);
+        W_tmp += (W_upper_LSB * (*cdfPtr)) >> 16;
 
         if (streamval <= W_tmp) {
           break;
@@ -359,7 +359,7 @@ int16_t WebRtcIsacfix_DecHistOneStepMulti(int16_t *data,
         }
 
         W_tmp = WEBRTC_SPL_UMUL_32_16(W_upper_MSB, *cdfPtr);
-        W_tmp += WEBRTC_SPL_UMUL_32_16_RSFT16(W_upper_LSB, *cdfPtr);
+        W_tmp += (W_upper_LSB * (*cdfPtr)) >> 16;
 
         if (streamval > W_tmp) {
           break;
diff --git a/webrtc/modules/audio_coding/codecs/isac/fix/source/arith_routines_logist.c b/webrtc/modules/audio_coding/codecs/isac/fix/source/arith_routines_logist.c
index 9391fb3c1d..e57416580c 100644
--- a/webrtc/modules/audio_coding/codecs/isac/fix/source/arith_routines_logist.c
+++ b/webrtc/modules/audio_coding/codecs/isac/fix/source/arith_routines_logist.c
@@ -150,9 +150,9 @@ int WebRtcIsacfix_EncLogisticMulti2(Bitstr_enc *streamData,
     W_upper_LSB = (uint16_t)W_upper;
     W_upper_MSB = (uint16_t)WEBRTC_SPL_RSHIFT_U32(W_upper, 16);
     W_lower = WEBRTC_SPL_UMUL_32_16(cdfLo, W_upper_MSB);
-    W_lower += WEBRTC_SPL_UMUL_32_16_RSFT16(cdfLo, W_upper_LSB);
+    W_lower += (cdfLo * W_upper_LSB) >> 16;
     W_upper = WEBRTC_SPL_UMUL_32_16(cdfHi, W_upper_MSB);
-    W_upper += WEBRTC_SPL_UMUL_32_16_RSFT16(cdfHi, W_upper_LSB);
+    W_upper += (cdfHi * W_upper_LSB) >> 16;
 
     /* shift interval such that it begins at zero */
     W_upper -= ++W_lower;