diff --git a/include/platform/radio.h b/include/platform/radio.h
index 2f9e6c636..ec51e2079 100644
--- a/include/platform/radio.h
+++ b/include/platform/radio.h
@@ -90,8 +90,8 @@ typedef enum otRadioCaps
 {
     kRadioCapsNone              = 0,  ///< None
     kRadioCapsAckTimeout        = 1,  ///< Radio supports AckTime event
-    kRadioCapsEnergyScan        = 2,  ///< Radio supports Enegery Scans
-    kRadioCapsTransmitRetries   = 4,  ///< Radio supports transmission retry logic with collission avoidance
+    kRadioCapsEnergyScan        = 2,  ///< Radio supports Energy Scans
+    kRadioCapsTransmitRetries   = 4,  ///< Radio supports transmission retry logic with collision avoidance
 } otRadioCaps;
 
 /**
diff --git a/src/core/Makefile.am b/src/core/Makefile.am
index b785cb252..19b78f04d 100644
--- a/src/core/Makefile.am
+++ b/src/core/Makefile.am
@@ -133,7 +133,7 @@ if OPENTHREAD_ENABLE_JAM_DETECTION
 SOURCES_COMMON                     += \
     utils/jam_detector.cpp            \
     $(NULL)
-endif  # OPENTHREAD_ENABLE_DHCP6_SERVER
+endif  # OPENTHREAD_ENABLE_JAM_DETECTION
 
 libopenthread_ftd_a_CPPFLAGS        = \
     $(CPPFLAGS_COMMON)                \
diff --git a/src/core/meshcop/dtls.hpp b/src/core/meshcop/dtls.hpp
index a29b376ec..ae8457401 100644
--- a/src/core/meshcop/dtls.hpp
+++ b/src/core/meshcop/dtls.hpp
@@ -235,7 +235,7 @@ private:
     ThreadNetif &mNetif;
 };
 
-}  // namspace MeshCoP
+}  // namespace MeshCoP
 }  // namespace Thread
 
 #endif  // DTLS_HPP_
diff --git a/src/core/thread/mle.hpp b/src/core/thread/mle.hpp
index 6fa64e028..8ad046758 100644
--- a/src/core/thread/mle.hpp
+++ b/src/core/thread/mle.hpp
@@ -454,7 +454,7 @@ public:
      * This method generates an MLE Announce message.
      *
      * @param[in]  aChannel        The channel to use when transmitting.
-     * @param[in]  aOrphanAnnounce To indiciate if MLE Announce is sent from an orphan end device.
+     * @param[in]  aOrphanAnnounce To indicate if MLE Announce is sent from an orphan end device.
      *
      * @retval kThreadError_None    Successfully generated an MLE Announce message.
      * @retval kThreadError_NoBufs  Insufficient buffers to generate the MLE Announce message.
@@ -977,7 +977,7 @@ protected:
      * This method appends a Active Timestamp TLV to a message.
      *
      * @param[in]  aMessage  A reference to the message.
-     * @param[in]  aCouldUseLocal  Ture to use local Active Timestamp when network Active Timestamp is not available, False not.
+     * @param[in]  aCouldUseLocal  True to use local Active Timestamp when network Active Timestamp is not available, False not.
      *
      * @retval kThreadError_None    Successfully appended the Active Timestamp TLV.
      * @retval kThreadError_NoBufs  Insufficient buffers available to append the Active Timestamp TLV.
@@ -989,7 +989,7 @@ protected:
      * This method appends a Pending Timestamp TLV to a message.
      *
      * @param[in]  aMessage  A reference to the message.
-     * @param[in]  aCouldUseLocal  Ture to use local Pending Timestamp when network Pending Timestamp is not available, False not.
+     * @param[in]  aCouldUseLocal  True to use local Pending Timestamp when network Pending Timestamp is not available, False not.
      *
      * @retval kThreadError_None    Successfully appended the Pending Timestamp TLV.
      * @retval kThreadError_NoBufs  Insufficient buffers available to append the Pending Timestamp TLV.
diff --git a/src/core/thread/mle_router_ftd.hpp b/src/core/thread/mle_router_ftd.hpp
index cb6f0d57e..e01a5306a 100644
--- a/src/core/thread/mle_router_ftd.hpp
+++ b/src/core/thread/mle_router_ftd.hpp
@@ -507,7 +507,7 @@ public:
     ThreadError RemoveStoredChild(uint16_t aChildRloc16);
 
     /**
-     * This method store a child infomation into non-volatile memory.
+     * This method store a child information into non-volatile memory.
      *
      * @param[in]  aChildRloc16   The child RLOC16 to store.
      *
diff --git a/src/core/thread/network_data_leader.hpp b/src/core/thread/network_data_leader.hpp
index dfeebd556..7a0f591fd 100644
--- a/src/core/thread/network_data_leader.hpp
+++ b/src/core/thread/network_data_leader.hpp
@@ -193,7 +193,7 @@ public:
 
 #if OPENTHREAD_ENABLE_DHCP6_SERVER || OPENTHREAD_ENABLE_DHCP6_CLIENT
     /**
-     * This method gets the Rloc of Dhcp Agent of speficified contextId.
+     * This method gets the Rloc of Dhcp Agent of specified contextId.
      *
      * @param[in]  aContextId      A pointer to the Commissioning Data value.
      * @param[out] aRloc16         The reference of which for output the Rloc16.