diff --git a/src/ops.c b/src/ops.c
index 4eef688..5e0c99f 100644
--- a/src/ops.c
+++ b/src/ops.c
@@ -4155,7 +4155,8 @@
     char_u	*cend;
     char_u	*newp;
     char_u	*spaces;	/* number of spaces inserte before a line */
-    int		endcurr1, endcurr2;
+    int		endcurr1 = NUL;
+    int		endcurr2 = NUL;
     int		currsize = 0;	/* size of the current line */
     int		sumsize = 0;	/* size of the long new line */
     linenr_T	t;