diff --git a/eo/src/eoVector.h b/eo/src/eoVector.h
index a5749335..a3a63453 100644
--- a/eo/src/eoVector.h
+++ b/eo/src/eoVector.h
@@ -55,8 +55,8 @@ public:
     @param size Length of vector (default is 0)
     @param value Initial value of all elements (default is default value of type GeneType)
     */
-    eoVector(unsigned size = 0, GeneType value = GeneType())
-        : EO<FitT>(), std::vector<GeneType>(size, value)
+    eoVector(unsigned _size = 0, GeneType _value = GeneType())
+        : EO<FitT>(), std::vector<GeneType>(_size, _value)
         {}
 
     /// copy ctor abstracting from the FitT
diff --git a/eo/src/eoVectorParticle.h b/eo/src/eoVectorParticle.h
index 21be1dac..b7eadc5c 100644
--- a/eo/src/eoVectorParticle.h
+++ b/eo/src/eoVectorParticle.h
@@ -64,8 +64,8 @@ public:
     *  @param velocity
     *  @param  bestPositions
     */
-    eoVectorParticle (unsigned _size = 0,PositionType position = PositionType (), VelocityType velocity = VelocityType (), PositionType bestPositions = PositionType ()):PO < FitT > (),std::vector < PositionType > (_size, position), bestPositions (_size, bestPositions), velocities (_size,
-                    velocity)
+    eoVectorParticle (unsigned _size = 0,PositionType _position = PositionType (), VelocityType _velocity = VelocityType (), PositionType _bestPositions = PositionType ()):PO < FitT > (),std::vector < PositionType > (_size, _position), bestPositions (_size, _bestPositions), velocities (_size,
+                    _velocity)
     {
     }