diff --git a/CMakeLists.txt b/CMakeLists.txt
index bb2decd8..6ef49b96 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -81,6 +81,10 @@ add_executable(subplot2grid examples/subplot2grid.cpp)
 target_link_libraries(subplot2grid PRIVATE matplotlib_cpp)
 set_target_properties(subplot2grid PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
 
+add_executable(subplot examples/subplot.cpp)
+target_link_libraries(subplot PRIVATE matplotlib_cpp)
+set_target_properties(subplot PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
+
 add_executable(lines3d examples/lines3d.cpp)
 target_link_libraries(lines3d PRIVATE matplotlib_cpp)
 set_target_properties(lines3d PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
diff --git a/examples/basic.cpp b/examples/basic.cpp
index 2dc34c74..dbe41110 100644
--- a/examples/basic.cpp
+++ b/examples/basic.cpp
@@ -1,6 +1,8 @@
 #define _USE_MATH_DEFINES
 #include <iostream>
 #include <cmath>
+#include <stdio.h>
+#include <unistd.h>
 #include "../matplotlibcpp.h"
 
 namespace plt = matplotlibcpp;
@@ -41,4 +43,9 @@ int main()
     const char* filename = "./basic.png";
     std::cout << "Saving result to " << filename << std::endl;;
     plt::save(filename);
+    plt::show(false);
+    while (true) {
+        sleep(1);
+        printf("got one\r\n");
+    }
 }
diff --git a/matplotlibcpp.h b/matplotlibcpp.h
index d95d46ad..aa85bc55 100644
--- a/matplotlibcpp.h
+++ b/matplotlibcpp.h
@@ -2255,9 +2255,9 @@ inline void subplot(long nrows, long ncols, long plot_number)
 
     // construct positional args
     PyObject* args = PyTuple_New(3);
-    PyTuple_SetItem(args, 0, PyFloat_FromDouble(nrows));
-    PyTuple_SetItem(args, 1, PyFloat_FromDouble(ncols));
-    PyTuple_SetItem(args, 2, PyFloat_FromDouble(plot_number));
+    PyTuple_SetItem(args, 0, PyInt_FromLong(nrows));
+    PyTuple_SetItem(args, 1, PyInt_FromLong(ncols));
+    PyTuple_SetItem(args, 2, PyInt_FromLong(plot_number));
 
     PyObject* res = PyObject_CallObject(detail::_interpreter::get().s_python_function_subplot, args);
     if(!res) throw std::runtime_error("Call to subplot() failed.");