diff --git a/arangod/PriorityQueue/priorityqueue.h b/arangod/PriorityQueue/priorityqueue.h
index bfd2e9e853..7c43085084 100644
--- a/arangod/PriorityQueue/priorityqueue.h
+++ b/arangod/PriorityQueue/priorityqueue.h
@@ -102,7 +102,7 @@ typedef struct TRI_pqueue_base_s {
   bool _reverse;  
   
   // ...........................................................................
-  // Additional hidden extenral structure used outside this priority queue
+  // Additional hidden external structure used outside this priority queue
   // This hidden structure is not available within this priority queue
   // ...........................................................................
   // char[n]
@@ -124,7 +124,7 @@ typedef struct TRI_pqueue_s {
 
 
   // ...........................................................................
-  // default pq add, remove ,top methods
+  // default pq add, remove, top methods
   // ...........................................................................
 
   bool  (*add)    (struct TRI_pqueue_s*, void*);
diff --git a/lib/BasicsC/associative.h b/lib/BasicsC/associative.h
index c07fbea121..d910818cd0 100644
--- a/lib/BasicsC/associative.h
+++ b/lib/BasicsC/associative.h
@@ -374,7 +374,7 @@ size_t TRI_GetLengthAssociativePointer (const TRI_associative_pointer_t* const);
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief associative array of synced pointers
 ///
-/// Note that lookup, insert, and remove are proctected using a read-write lock.
+/// Note that lookup, insert, and remove are protected using a read-write lock.
 ////////////////////////////////////////////////////////////////////////////////
 
 typedef struct TRI_associative_synced_s {