diff --git a/Python/ceval.c b/Python/ceval.c
index 4c6c0ea..10dd3a1 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -27,7 +27,7 @@
 
 typedef unsigned long long uint64;
 
-/* PowerPC suppport.
+/* PowerPC support.
    "__ppc__" appears to be the preprocessor definition to detect on OS X, whereas
    "__powerpc__" appears to be the correct one for Linux with GCC
 */
@@ -987,7 +987,7 @@
         if (--_Py_Ticker < 0) {
             if (*next_instr == SETUP_FINALLY) {
                 /* Make the last opcode before
-                   a try: finally: block uninterruptable. */
+                   a try: finally: block uninterruptible. */
                 goto fast_next_opcode;
             }
             _Py_Ticker = _Py_CheckInterval;