diff --git a/src/pyxforms/bitmaps.c b/src/pyxforms/bitmaps.c
index 0475a3a..097e775 100644
--- a/src/pyxforms/bitmaps.c
+++ b/src/pyxforms/bitmaps.c
@@ -138,4 +138,5 @@ PyInit_bitmaps()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module bitmaps");
+    return m;
 }
diff --git a/src/pyxforms/box.c b/src/pyxforms/box.c
index ea6b8a8..41b0705 100644
--- a/src/pyxforms/box.c
+++ b/src/pyxforms/box.c
@@ -95,5 +95,6 @@ PyInit_box()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module box");
+    return m;
 }
 
diff --git a/src/pyxforms/browser.c b/src/pyxforms/browser.c
index a27db45..1105084 100644
--- a/src/pyxforms/browser.c
+++ b/src/pyxforms/browser.c
@@ -492,5 +492,6 @@ PyInit_browser()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module browser");
+    return m;
 }
 
diff --git a/src/pyxforms/button.c b/src/pyxforms/button.c
index 3e77bdb..0fb84ed 100644
--- a/src/pyxforms/button.c
+++ b/src/pyxforms/button.c
@@ -375,5 +375,6 @@ PyInit_button()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module button");
+    return m;
 }
 
diff --git a/src/pyxforms/choice.c b/src/pyxforms/choice.c
index d84a104..dd97c03 100644
--- a/src/pyxforms/choice.c
+++ b/src/pyxforms/choice.c
@@ -351,5 +351,6 @@ PyInit_choice()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module choice");
+    return m;
 }
 
diff --git a/src/pyxforms/clock.c b/src/pyxforms/clock.c
index 1762987..55ba2b5 100644
--- a/src/pyxforms/clock.c
+++ b/src/pyxforms/clock.c
@@ -112,5 +112,6 @@ PyInit_clock()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module clock");
+    return m;
 }
 
diff --git a/src/pyxforms/counter.c b/src/pyxforms/counter.c
index 3cb1990..44f1220 100644
--- a/src/pyxforms/counter.c
+++ b/src/pyxforms/counter.c
@@ -210,5 +210,6 @@ PyInit_counter()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module counter");
+    return m;
 }
 
diff --git a/src/pyxforms/dial.c b/src/pyxforms/dial.c
index 8b767da..9538f18 100644
--- a/src/pyxforms/dial.c
+++ b/src/pyxforms/dial.c
@@ -210,5 +210,6 @@ PyInit_dial()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module dial");
+    return m;
 }
 
diff --git a/src/pyxforms/forms.c b/src/pyxforms/forms.c
index d3de0d4..10df9a2 100644
--- a/src/pyxforms/forms.c
+++ b/src/pyxforms/forms.c
@@ -681,7 +681,7 @@ static struct PyModuleDef moduledef =
 };
 
 PyMODINIT_FUNC
-PyInit_forms()
+PyInit_forms(void)
 {
     PyObject *m, *d;
 
@@ -698,5 +698,6 @@ PyInit_forms()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module forms");
+    return m;
 }
 
diff --git a/src/pyxforms/frame.c b/src/pyxforms/frame.c
index 5402512..b96d7c2 100644
--- a/src/pyxforms/frame.c
+++ b/src/pyxforms/frame.c
@@ -93,5 +93,6 @@ PyInit_frame()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module frame");
+    return m;
 }
 
diff --git a/src/pyxforms/goodies.c b/src/pyxforms/goodies.c
index 5754747..b587c0e 100644
--- a/src/pyxforms/goodies.c
+++ b/src/pyxforms/goodies.c
@@ -505,5 +505,6 @@ PyInit_goodies()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module goodies");
+    return m;
 }
 
diff --git a/src/pyxforms/input.c b/src/pyxforms/input.c
index ed47483..04dc958 100644
--- a/src/pyxforms/input.c
+++ b/src/pyxforms/input.c
@@ -252,5 +252,6 @@ PyInit_input()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module input");
+    return m;
 }
 
diff --git a/src/pyxforms/menu.c b/src/pyxforms/menu.c
index 5ba4766..f0ef5f9 100644
--- a/src/pyxforms/menu.c
+++ b/src/pyxforms/menu.c
@@ -312,5 +312,6 @@ PyInit_menu()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module menu");
+    return m;
 }
 
diff --git a/src/pyxforms/objects.c b/src/pyxforms/objects.c
index 799549d..2113f34 100644
--- a/src/pyxforms/objects.c
+++ b/src/pyxforms/objects.c
@@ -519,5 +519,6 @@ PyInit_objects()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module objects");
+    return m;
 }
 
diff --git a/src/pyxforms/pixmaps.c b/src/pyxforms/pixmaps.c
index 6b97868..9c87456 100644
--- a/src/pyxforms/pixmaps.c
+++ b/src/pyxforms/pixmaps.c
@@ -136,5 +136,6 @@ PyInit_pixmaps()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module pixmaps");
+    return m;
 }
 
diff --git a/src/pyxforms/popups.c b/src/pyxforms/popups.c
index 25c4fb5..6c95662 100644
--- a/src/pyxforms/popups.c
+++ b/src/pyxforms/popups.c
@@ -379,5 +379,6 @@ PyInit_popups()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module popups");
+    return m;
 }
 
diff --git a/src/pyxforms/positioner.c b/src/pyxforms/positioner.c
index 89c6265..8d31956 100644
--- a/src/pyxforms/positioner.c
+++ b/src/pyxforms/positioner.c
@@ -311,5 +311,6 @@ PyInit_positioner()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module positioner");
+    return m;
 }
 
diff --git a/src/pyxforms/slider.c b/src/pyxforms/slider.c
index 75ae9dc..42e822a 100644
--- a/src/pyxforms/slider.c
+++ b/src/pyxforms/slider.c
@@ -272,5 +272,6 @@ PyInit_slider()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module slider");
+    return m;
 }
 
diff --git a/src/pyxforms/text.c b/src/pyxforms/text.c
index a5aa61e..6c5805f 100644
--- a/src/pyxforms/text.c
+++ b/src/pyxforms/text.c
@@ -91,5 +91,6 @@ PyInit_text()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module text");
+    return m;
 }
 
diff --git a/src/pyxforms/timer.c b/src/pyxforms/timer.c
index b302d67..dc4b489 100644
--- a/src/pyxforms/timer.c
+++ b/src/pyxforms/timer.c
@@ -132,5 +132,6 @@ PyInit_timer()
     /* Check for errors */
     if (PyErr_Occurred())
         Py_FatalError("can't initialize module timer");
+    return m;
 }
 
diff --git a/src/pyxforms/xforms.c b/src/pyxforms/xforms.c
index 1adfe4e..bde948c 100644
--- a/src/pyxforms/xforms.c
+++ b/src/pyxforms/xforms.c
@@ -85,6 +85,6 @@ static struct PyModuleDef moduledef =
 PyMODINIT_FUNC
 PyInit_xforms()
 {
-    PyModule_Create(&moduledef);
+    return PyModule_Create(&moduledef);
 }
 
diff --git a/src/pyxforms/xyplot.c b/src/pyxforms/xyplot.c
index 0c86d10..cba420d 100644
--- a/src/pyxforms/xyplot.c
+++ b/src/pyxforms/xyplot.c
@@ -448,4 +448,5 @@ PyInit_xyplot ()
     /* Check for errors */
     if (PyErr_Occurred ())
         Py_FatalError ("can't initialize module xyplot");
+    return m;
 }