diff --git a/gpu/octree/src/cuda/octree_iterator.hpp b/gpu/octree/src/cuda/octree_iterator.hpp
index 87fbfc45604..86753c262a5 100644
--- a/gpu/octree/src/cuda/octree_iterator.hpp
+++ b/gpu/octree/src/cuda/octree_iterator.hpp
@@ -118,7 +118,7 @@ namespace pcl
                 {                
                     if (length > 1)
                     {
-                        lenght--;
+                        length--;
                         node_idx++;                      
                         break;
                     }
diff --git a/gpu/octree/src/utils/priority_octree_iterator.hpp b/gpu/octree/src/utils/priority_octree_iterator.hpp
index c3486add867..bcd616c6d8c 100644
--- a/gpu/octree/src/utils/priority_octree_iterator.hpp
+++ b/gpu/octree/src/utils/priority_octree_iterator.hpp
@@ -74,7 +74,7 @@ namespace pcl
                 {                
                     if (length > 1)
                     {
-                        lenght--;
+                        length--;
                         node_idx++;                      
                         break;
                     }
diff --git a/simulation/src/range_likelihood.cpp b/simulation/src/range_likelihood.cpp
index e0e7e9b2687..dca919f0e5c 100644
--- a/simulation/src/range_likelihood.cpp
+++ b/simulation/src/range_likelihood.cpp
@@ -539,7 +539,7 @@ costFunction4(float ref_val,float depth_val)
   float proportion = 0.999f;
   float lhood = proportion + (1-proportion)*(top/bottom);
 
-  // safety fix that seems to be required due to opengl asyschronizate
+  // safety fix that seems to be required due to opengl asynchronization
   // ask hordur about this
   if (bottom == 0)
   {