diff --git a/Python/thread.c b/Python/thread.c
index 1578f82..dd359e9 100644
--- a/Python/thread.c
+++ b/Python/thread.c
@@ -46,7 +46,7 @@
 #endif
 
 /* Check if we're running on HP-UX and _SC_THREADS is defined. If so, then
-   enough of the Posix threads package is implimented to support python
+   enough of the Posix threads package is implemented to support python
    threads.
 
    This is valid for HP-UX 11.23 running on an ia64 system. If needed, add