diff --git a/src/if_cscope.c b/src/if_cscope.c
index e1408b2..4904424 100644
--- a/src/if_cscope.c
+++ b/src/if_cscope.c
@@ -651,7 +651,7 @@
 cs_reading_emsg(
     int idx)	/* connection index */
 {
-    semsg(_("E262: error reading cscope connection %ld"), idx);
+    semsg(_("E262: error reading cscope connection %d"), idx);
 }
 
 #define	CSREAD_BUFSIZE	2048