diff --git a/src/if_python.c b/src/if_python.c
index 8fcb109..66e792b 100644
--- a/src/if_python.c
+++ b/src/if_python.c
@@ -1764,7 +1764,7 @@
 
 	if (name == NULL)
 	    name = "";
-	len = strlen(name);
+	len = (int)strlen(name);
 
 	if (len > 45)
 	    name = name + (45 - len);