diff --git a/README.md b/README.md
index 786477a..87b46c6 100644
--- a/README.md
+++ b/README.md
@@ -111,7 +111,7 @@ Caution: If you want to multithread operations over functional multi arrays, you
 
 # Planned features
 
-Basically the structure of the operation routines allows in some cases (at least in those, where it is possible for simple c++ for loops) vectorization and multi threading. So far the necessary implamentations are not done, but it is planned to enable these features.
+Basically the structure of the operation routines allows in some cases (at least in those, where it is possible for simple c++ for loops) vectorization. So far the necessary implamentations are not done, but it is planned to enable these features.
 
 # Known Issues
 
diff --git a/src/tests/op_unit_test.cc b/src/tests/op_unit_test.cc
index 72fbe7e..4bd8bfb 100644
--- a/src/tests/op_unit_test.cc
+++ b/src/tests/op_unit_test.cc
@@ -296,9 +296,8 @@ namespace {
 	{
 	    data.resize(s);
 	    for(size_t i = 0; i != s; ++i){
-		double arg = static_cast<double>( i - s ) - 0.1; 
-		data[i] = sin(arg);
-		//VCHECK(data[i]);
+		const double arg = static_cast<double>( s - i ) - 0.1; 
+		data[i] = sin(arg)*10;
 	    }
 	    SRF f;
 	    sr = std::dynamic_pointer_cast<SR>(f.create());