diff --git a/mats/foreign4.c b/mats/foreign4.c
index dd17f38103..82bbc5aec3 100644
--- a/mats/foreign4.c
+++ b/mats/foreign4.c
@@ -40,7 +40,7 @@ typedef long long i64;
 # define EXPORT
 #endif
 
-/* To help make sure that argument and result handling doens't
+/* To help make sure that argument and result handling doesn't
    read or write too far, try to provide functions that allocate
    a structure at the end of a memory page (where the next page is
    likely to be unmapped) */