fix typo in comment

1 files changed, 1 insertions, 1 deletions

diff --git a/psr.h b/psr.h
index 9a3caa9..6a9d3ea 100644
--- a/psr.h
+++ b/psr.h
@@ -77,7 +77,7 @@ inline static void set_system_mode(void)
   // compilation with optimizations
   volatile PSR_t CPSR __attribute__((unused)) = read_CPSR();
 
-  //// this is 2 ways of changing mode, both with the same
+  //// there are 2 ways of changing mode, both with the same
   //// problem (see the long comment below)
 
   //// way 1