diff --git a/cxx/CMakeLists.txt b/cxx/CMakeLists.txt
index 4a57beb..241d8eb 100644
--- a/cxx/CMakeLists.txt
+++ b/cxx/CMakeLists.txt
@@ -146,5 +146,6 @@ if (WITH_TESTS)
     set(FITPACK_TEST_APP fitpack_test)
     add_executable(${FITPACK_TEST_APP} tests/fitpack_test.cpp)
     target_link_libraries(${FITPACK_TEST_APP}  fitpack)
-    # target_include_directories(${FITPACK_TEST_APP} PRIVATE fitpack)
+    target_include_directories(${FITPACK_TEST_APP} PRIVATE ${FITPACK_INCLUDE_DIR})
+    message(STATUS "INC UP: " ${FITPACK_INCLUDE_DIR})
 endif()
diff --git a/cxx/fitpack/CMakeLists.txt b/cxx/fitpack/CMakeLists.txt
index af78251..7afec0b 100644
--- a/cxx/fitpack/CMakeLists.txt
+++ b/cxx/fitpack/CMakeLists.txt
@@ -28,4 +28,4 @@ FortranCInterface_HEADER(FortranCInterface.h
 FortranCInterface_VERIFY(CXX)
 
 add_library(fitpack STATIC ${src_files} fitpack.h)
-
+set(FITPACK_INCLUDE_DIR ${CMAKE_CURRENT_BINARY_DIR} PARENT_SCOPE)
diff --git a/cxx/fitpack/fitpack.h b/cxx/fitpack/fitpack.h
index 3d52618..6c9b09c 100644
--- a/cxx/fitpack/fitpack.h
+++ b/cxx/fitpack/fitpack.h
@@ -1,11 +1,10 @@
 #pragma once
 
 #include <limits>
-#include <memory>
 #include <ranges>
 #include <vector>
 
-#include "/home/timur/PROGRAMS/C++/build-mountcontrol-Desktop-Debug/cxx/fitpack/FortranCInterface.h"
+#include <FortranCInterface.h>
 
 extern "C" {
 void surfit(int* iopt,
diff --git a/cxx/tests/fitpack_test.cpp b/cxx/tests/fitpack_test.cpp
index af5ea69..0e5c13f 100644
--- a/cxx/tests/fitpack_test.cpp
+++ b/cxx/tests/fitpack_test.cpp
@@ -9,8 +9,8 @@
 
 int main()
 {
-    // size_t nt = 3, np = 5, N = nt * np, i = 1;
-    size_t nt = 10, np = 20, N = nt * np, i = 1;
+    size_t nt = 30, np = 60, N = nt * np, i = 1;
+    // size_t nt = 10, np = 20, N = nt * np, i = 1;
     double ts = std::numbers::pi / (nt + 1);
     double ps = 2.0 * std::numbers::pi / (np + 1);
 
@@ -46,7 +46,8 @@ int main()
         k = 1;
     }
 
-    std::uniform_real_distribution<double> distr{-0.1, 0.1};
+    // std::uniform_real_distribution<double> distr{-0.1, 0.1};
+    std::normal_distribution<double> distr{0.0, 1.0};
     std::random_device device;
     std::mt19937 engine{device()};
 
@@ -57,7 +58,8 @@ int main()
     });
 
 
-    size_t ntk = 3, npk = 6, nf = (ntk + 4) * (npk + 4);
+    int ntk = 24, npk = 29, nf = (ntk + 4) * (npk + 4);
+    // int ntk = 3, npk = 6, nf = (ntk + 4) * (npk + 4);
     std::vector<double> tk(ntk + 8), pk(npk + 8), coeffs(nf);
     ts = std::numbers::pi / (ntk + 1);
     ps = 2.0 * std::numbers::pi / (npk + 1);
@@ -74,11 +76,23 @@ int main()
     std::cout << "FIT EC = " << ec << "\n";
     std::cout << "FIT RESI = " << rs << "\n";
 
+    ntk += 8;
+    npk += 8;
+    std::ranges::fill(tk, -1);
+    std::ranges::fill(pk, -1);
+    ec = mcc::fitpack::fitpack_sphere_smooth(tetha, phi, func, 1.0, 56000.0, ntk, npk, tk, pk, coeffs, rs);
+
+    std::cout << "FIT EC = " << ec << "\n";
+    std::cout << "FIT RESI = " << rs << "\n";
+    std::cout << "NKNOTS: " << ntk << ", " << npk << "\n";
+
+
     print_func(coeffs, "coeffs");
 
     // print_func(tetha, "tetha");
     // print_func(phi, "phi");
     print_func(tk, "tetha_knots");
+    print_func(pk, "phi_knots");
     print_func(func, "func");
 
     std::cout << "\n\n";