diff --git a/include/osg/Vec2f b/include/osg/Vec2f
index ea8017bf5..30e5a9b58 100644
--- a/include/osg/Vec2f
+++ b/include/osg/Vec2f
@@ -154,7 +154,7 @@ class Vec2f
 	    float norm = Vec2f::length();
             if (norm>0.0)
             {
-                float inv = 1.0/norm;
+                float inv = 1.0f/norm;
 	        _v[0] *= inv;
 	        _v[1] *= inv;
             }
diff --git a/include/osg/Vec3f b/include/osg/Vec3f
index 81716ecc3..91a9affdd 100644
--- a/include/osg/Vec3f
+++ b/include/osg/Vec3f
@@ -177,7 +177,7 @@ class Vec3f
             value_type norm = Vec3f::length();
             if (norm>0.0)
             {
-                value_type inv = 1.0/norm;
+                value_type inv = 1.0f/norm;
                 _v[0] *= inv;
                 _v[1] *= inv;
                 _v[2] *= inv;
diff --git a/include/osg/Vec4d b/include/osg/Vec4d
index f18f11228..b5805bafa 100644
--- a/include/osg/Vec4d
+++ b/include/osg/Vec4d
@@ -214,7 +214,7 @@ class Vec4d
             value_type norm = Vec4d::length();
             if (norm>0.0f)
             {
-                value_type inv = 1.0f/norm;
+                value_type inv = 1.0/norm;
                 _v[0] *= inv;
                 _v[1] *= inv;
                 _v[2] *= inv;