diff --git a/src/mzscheme/src/port.c b/src/mzscheme/src/port.c
index 635a10fce1..6eaba89dff 100644
--- a/src/mzscheme/src/port.c
+++ b/src/mzscheme/src/port.c
@@ -240,7 +240,7 @@ static int dec_refcount(int *refcount)
 {
   if (!refcount)
     return 0;
-  *refcont -= 1;
+  *refcount -= 1;
   return *refcount;
 }