diff --git a/Python/getplatform.c b/Python/getplatform.c
index b8e89ef..9830917 100644
--- a/Python/getplatform.c
+++ b/Python/getplatform.c
@@ -15,7 +15,7 @@
 #endif
 
 const char *
-Py_GetPlatform()
+Py_GetPlatform(void)
 {
 	return PLATFORM;
 }