diff --git a/usr.bin/top/top.c b/usr.bin/top/top.c
index 31d8ddb0b..5a8ccbd4e 100644
--- a/usr.bin/top/top.c
+++ b/usr.bin/top/top.c
@@ -162,7 +162,7 @@ void parse_file(pid_t pid)
 		}
 
 		p->p_effuid = effuid;
-	}
+	} else p->p_effuid = 0;
 
 	for(i = 1; i < CPUTIMENAMES; i++) {
 		if(fscanf(fp, " %lu %lu",