diff --git a/src/math/simplex/model_based_opt.cpp b/src/math/simplex/model_based_opt.cpp
index ded6aa6450..d22d0fb8bd 100644
--- a/src/math/simplex/model_based_opt.cpp
+++ b/src/math/simplex/model_based_opt.cpp
@@ -73,7 +73,6 @@ namespace opt {
         }
 
         if (div < 0) {
-            sign = true;
             div.neg();
             lc.neg();
             coeff.neg();
diff --git a/src/util/util.cpp b/src/util/util.cpp
index b158cf9508..fbc13c6e0d 100644
--- a/src/util/util.cpp
+++ b/src/util/util.cpp
@@ -86,7 +86,6 @@ unsigned log2(unsigned v) {
         r |=  2;
     }
     if (v & 0x2) {
-        v >>= 1;
         r |=  1;
     }
     return r;
@@ -115,7 +114,6 @@ unsigned uint64_log2(uint64_t v) {
         r |=  2;
     }
     if (v & 0x2) {
-        v >>= 1;
         r |=  1;
     }
     return r;