diff --git a/src/regexp.c b/src/regexp.c
index 480f4cc..57ea736 100644
--- a/src/regexp.c
+++ b/src/regexp.c
@@ -3538,6 +3538,7 @@
 
     regline = line;
     reglnum = 0;
+    reg_toolong = FALSE;
 
     /* Simplest case: Anchored match need be tried only once. */
     if (prog->reganch)