diff --git a/CMakeLists.txt b/CMakeLists.txt
index f9df817..e77b11e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -36,7 +36,7 @@ ExternalProject_Add(sharp
   SOURCE_DIR ${SHARP_SOURCE}
   BUILD_IN_SOURCE 1 
   CONFIGURE_COMMAND ${SHARP_SOURCE}/configure --prefix=${DEP_BUILD}
-  BUILD_COMMAND make
+  BUILD_COMMAND ${CMAKE_MAKE_PROGRAM}
   INSTALL_COMMAND echo "No install"
 )
 
diff --git a/sample/CMakeLists.txt b/sample/CMakeLists.txt
index 765e1b3..629cbce 100644
--- a/sample/CMakeLists.txt
+++ b/sample/CMakeLists.txt
@@ -54,6 +54,7 @@ if (SHARP_LIBRARY AND SHARP_INCLUDE_PATH AND EIGEN3_FOUND)
   add_executable(test_healpix_calls test_healpix_calls.cpp)
   target_link_libraries(test_healpix_calls ${tolink} ${SHARP_LIBRARIES})
   set_target_properties(test_healpix_calls PROPERTIES COMPILE_FLAGS ${OpenMP_CXX_FLAGS} LINK_FLAGS ${OpenMP_CXX_FLAGS})
+  add_dependencies(test_healpix_calls sharp)
 endif (SHARP_LIBRARY AND SHARP_INCLUDE_PATH AND EIGEN3_FOUND)
 
 add_executable(test_cosmopower test_cosmopower.cpp)