diff --git a/lib_com/lerp.c b/lib_com/lerp.c
index bb33d9922c50b3f745edce408841d7671f56b12e..28719205a02f9cfacdec6f7dc3686e8493e858bd 100644
--- a/lib_com/lerp.c
+++ b/lib_com/lerp.c
@@ -430,7 +430,7 @@ static void lerp_proc32( Word32 *f /*Qx*/, Word32 *f_out /*Qx*/, Word16 bufferNe
         {
             diff = sub( 16384 /*0.5f Q15*/, diff ); /*Q15*/
         }
-        *ptr++ = L_add_sat( f[idx], Mpy_32_16_1( L_sub( f[idx + 1], f[idx] ), diff ) ); /*Qx*/
+        *ptr++ = L_add_sat( f[idx], L_sub( Mpy_32_16_1( f[idx + 1], diff ), Mpy_32_16_1( f[idx], diff ) ) ); /*Qx*/
         move32();
         pos = L_add( pos, shift ); /*Q16*/
         idx = extract_h( pos );