diff --git a/eo/src/eoFlOrMonOp.h b/eo/src/eoFlOrMonOp.h
index 4b56cb51..ae6f7d74 100644
--- a/eo/src/eoFlOrMonOp.h
+++ b/eo/src/eoFlOrMonOp.h
@@ -31,7 +31,7 @@
 #include <eoInit.h>
 
 /** Base classes for generic mutations on fixed length chromosomes.
- *  COntains 2 classes that both use an atomic mutation
+ *  Contains 2 classes that both use an atomic mutation
  *      eoFlOrAllMutation applies the atom mutation to all components with given rate
  *      eoFlOrKMutation applies the atom mutation to a fixed nb of components
  *
diff --git a/eo/src/eoProportionalCombinedOp.h b/eo/src/eoProportionalCombinedOp.h
index 8a30d368..e1f3053c 100644
--- a/eo/src/eoProportionalCombinedOp.h
+++ b/eo/src/eoProportionalCombinedOp.h
@@ -205,6 +205,6 @@ std::vector<double> rates;
 };
 
 
-// for General Ops, it's another story - see eoOpCOntainer
+// for General Ops, it's another story - see eoOpContainer
 #endif
 
diff --git a/eo/test/t-eoPBIL.cpp b/eo/test/t-eoPBIL.cpp
index bc251fe2..adba787f 100644
--- a/eo/test/t-eoPBIL.cpp
+++ b/eo/test/t-eoPBIL.cpp
@@ -74,7 +74,7 @@ int main(int argc, char* argv[])
   eoEvalFuncPtr<Indi, double> mainEval( binary_value<Indi>);
   eoEvalFuncCounter<Indi> eval(mainEval);
 
-  // COnstruction of the distribution
+  // Construction of the distribution
   eoPBILDistrib<Indi> & distrib = make_PBILdistrib(parser, state, Indi());
   // and the update rule
   eoDistribUpdater<Indi> & update = make_PBILupdate(parser, state, Indi());