diff --git a/src/misc1.c b/src/misc1.c
index e83ec66..bf70e38 100644
--- a/src/misc1.c
+++ b/src/misc1.c
@@ -2843,7 +2843,7 @@
 
 // Return something that fits into an int.
     int
-trim_to_int(long long x)
+trim_to_int(vimlong_T x)
 {
     return x > INT_MAX ? INT_MAX : x < INT_MIN ? INT_MIN : x;
 }