diff --git a/src/os_unix.c b/src/os_unix.c
index 591b49c..102b654 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -1138,10 +1138,10 @@
      * to happen).
      */
     {
-	long wait;
-	for (wait = 0; !sigcont_received && wait <= 3L; wait++)
+	long wait_time;
+	for (wait_time = 0; !sigcont_received && wait_time <= 3L; wait_time++)
 	    /* Loop is not entered most of the time */
-	    mch_delay(wait, FALSE);
+	    mch_delay(wait_time, FALSE);
     }
 # endif