diff --git a/src/if_cscope.c b/src/if_cscope.c
index e76b58d..b2d39cf 100644
--- a/src/if_cscope.c
+++ b/src/if_cscope.c
@@ -1400,7 +1400,7 @@
 	return NULL;
 
     /* Store length of eap->arg before it gets modified by strtok(). */
-    eap_arg_len = STRLEN(eap->arg);
+    eap_arg_len = (int)STRLEN(eap->arg);
 
     if ((stok = strtok((char *)(eap->arg), (const char *)" ")) == NULL)
 	return NULL;