diff --git a/cmake/matplotlib_cppConfig.cmake.in b/cmake/matplotlib_cppConfig.cmake.in
index 1793f29..86d25d0 100644
--- a/cmake/matplotlib_cppConfig.cmake.in
+++ b/cmake/matplotlib_cppConfig.cmake.in
@@ -4,4 +4,7 @@ if(NOT TARGET matplotlib_cpp::matplotlib_cpp)
   find_package(Python3 COMPONENTS Interpreter Development REQUIRED)
   find_package(Python3 COMPONENTS NumPy)
   include("${matplotlib_cpp_CMAKE_DIR}/matplotlib_cppTargets.cmake")
+
+  get_target_property(matplotlib_cpp_INCLUDE_DIRS matplotlib_cpp::matplotlib_cpp INTERFACE_INCLUDE_DIRECTORIES)
+
 endif()
diff --git a/examples/lines3d.cpp b/examples/lines3d.cpp
index f3c201c..fd4610d 100644
--- a/examples/lines3d.cpp
+++ b/examples/lines3d.cpp
@@ -1,5 +1,5 @@
+#define _USE_MATH_DEFINES
 #include "../matplotlibcpp.h"
-
 #include <cmath>
 
 namespace plt = matplotlibcpp;