diff --git a/src/dsr/model/dsr-routing.cc b/src/dsr/model/dsr-routing.cc
index e8927d302..15da63f12 100644
--- a/src/dsr/model/dsr-routing.cc
+++ b/src/dsr/model/dsr-routing.cc
@@ -2613,7 +2613,7 @@ DsrRouting::ScheduleRreqRetry (Ptr<Packet> packet, std::vector<Ipv4Address> addr
       if (m_rreqTable->GetRreqCnt (dst))
         {
           // When the route request count is larger than 0
-          rreqDelay = Time (std::pow (m_rreqTable->GetRreqCnt (dst), 2) * m_requestPeriod);
+          rreqDelay = Time (std::pow (static_cast<double> (m_rreqTable->GetRreqCnt (dst)), 2.0) * m_requestPeriod);
         }
       else
         {
diff --git a/src/wimax/model/simple-ofdm-wimax-phy.cc b/src/wimax/model/simple-ofdm-wimax-phy.cc
index 6b87f879a..9876e7c90 100644
--- a/src/wimax/model/simple-ofdm-wimax-phy.cc
+++ b/src/wimax/model/simple-ofdm-wimax-phy.cc
@@ -522,7 +522,7 @@ SimpleOfdmWimaxPhy::ConvertBitsToBurst (bvec buffer)
       for (int l = 0; l < 8; l++)
         {
           bool bin = buffer.at (i + l);
-          temp += (uint8_t)(bin * std::pow (2, (7 - l)));
+          temp += (uint8_t)(bin * std::pow (2.0, (7 - l)));
         }
 
       *(pstart + j) = temp;