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 ce84ec85f..3966c2f51 100644
--- a/webrtc/common_audio/signal_processing/include/signal_processing_library.h
+++ b/webrtc/common_audio/signal_processing/include/signal_processing_library.h
@@ -55,8 +55,6 @@
     ((uint32_t) ((uint32_t)(a) * (uint32_t)(b)))
 #define WEBRTC_SPL_UMUL_16_16(a, b) \
     ((uint32_t) (uint16_t)(a) * (uint16_t)(b))
-#define WEBRTC_SPL_UMUL_16_16_RSFT16(a, b) \
-    (((uint32_t) (uint16_t)(a) * (uint16_t)(b)) >> 16)
 #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) \
diff --git a/webrtc/common_audio/signal_processing/signal_processing_unittest.cc b/webrtc/common_audio/signal_processing/signal_processing_unittest.cc
index 90e116f36..26225b5ff 100644
--- a/webrtc/common_audio/signal_processing/signal_processing_unittest.cc
+++ b/webrtc/common_audio/signal_processing/signal_processing_unittest.cc
@@ -47,7 +47,6 @@ TEST_F(SplTest, MacroTest) {
     EXPECT_EQ(2147483651u, WEBRTC_SPL_UMUL(a, b));
     b = WEBRTC_SPL_WORD16_MAX >> 1;
     EXPECT_EQ(1073627139u, WEBRTC_SPL_UMUL_16_16(a, b));
-    EXPECT_EQ(16382u, WEBRTC_SPL_UMUL_16_16_RSFT16(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));
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 62a20a2ef..8de74752e 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
@@ -17,7 +17,6 @@
 
 #include "arith_routins.h"
 
-
 /* Tables for piecewise linear cdf functions: y = k*x */
 
 /* x Points for function piecewise() in Q15 */
@@ -304,7 +303,7 @@ int16_t WebRtcIsacfix_DecLogisticMulti2(int16_t *dataQ7,
       cdfTmp = WebRtcIsacfix_Piecewise(WEBRTC_SPL_MUL_16_U16(candQ7, tmpARSpecQ8));
 
       W_tmp = WEBRTC_SPL_UMUL_16_16(cdfTmp, W_upper_MSB);
-      W_tmp += WEBRTC_SPL_UMUL_16_16_RSFT16(cdfTmp, W_upper_LSB);
+      W_tmp += ((uint32_t)cdfTmp * (uint32_t)W_upper_LSB) >> 16;
 
       if (streamVal > W_tmp)
       {
@@ -313,7 +312,7 @@ int16_t WebRtcIsacfix_DecLogisticMulti2(int16_t *dataQ7,
         cdfTmp = WebRtcIsacfix_Piecewise(WEBRTC_SPL_MUL_16_U16(candQ7, tmpARSpecQ8));
 
         W_tmp = WEBRTC_SPL_UMUL_16_16(cdfTmp, W_upper_MSB);
-        W_tmp += WEBRTC_SPL_UMUL_16_16_RSFT16(cdfTmp, W_upper_LSB);
+        W_tmp += ((uint32_t)cdfTmp * (uint32_t)W_upper_LSB) >> 16;
 
         while (streamVal > W_tmp)
         {
@@ -323,7 +322,7 @@ int16_t WebRtcIsacfix_DecLogisticMulti2(int16_t *dataQ7,
               WEBRTC_SPL_MUL_16_U16(candQ7, tmpARSpecQ8));
 
           W_tmp = WEBRTC_SPL_UMUL_16_16(cdfTmp, W_upper_MSB);
-          W_tmp += WEBRTC_SPL_UMUL_16_16_RSFT16(cdfTmp, W_upper_LSB);
+          W_tmp += ((uint32_t)cdfTmp * (uint32_t)W_upper_LSB) >> 16;
 
           /* error check */
           if (W_lower == W_tmp) {
@@ -342,7 +341,7 @@ int16_t WebRtcIsacfix_DecLogisticMulti2(int16_t *dataQ7,
         cdfTmp = WebRtcIsacfix_Piecewise(WEBRTC_SPL_MUL_16_U16(candQ7, tmpARSpecQ8));
 
         W_tmp = WEBRTC_SPL_UMUL_16_16(cdfTmp, W_upper_MSB);
-        W_tmp += WEBRTC_SPL_UMUL_16_16_RSFT16(cdfTmp, W_upper_LSB);
+        W_tmp += ((uint32_t)cdfTmp * (uint32_t)W_upper_LSB) >> 16;
 
         while ( !(streamVal > W_tmp) )
         {
@@ -352,7 +351,7 @@ int16_t WebRtcIsacfix_DecLogisticMulti2(int16_t *dataQ7,
               WEBRTC_SPL_MUL_16_U16(candQ7, tmpARSpecQ8));
 
           W_tmp = WEBRTC_SPL_UMUL_16_16(cdfTmp, W_upper_MSB);
-          W_tmp += WEBRTC_SPL_UMUL_16_16_RSFT16(cdfTmp, W_upper_LSB);
+          W_tmp += ((uint32_t)cdfTmp * (uint32_t)W_upper_LSB) >> 16;
 
           /* error check */
           if (W_upper == W_tmp){