1 files changed, 1 insertions, 1 deletions
diff --git a/missing/isinf.c b/missing/isinf.c
index 1b09f11f19..8829b72935 100644
--- a/missing/isinf.c
+++ b/missing/isinf.c
@@ -31,7 +31,7 @@ int
 isinf(n)
     double n;
 {
-    return (!finite(x) && !isnan(x))
+    return (!finite(n) && !isnan(n));
 }
 
 #else