1 files changed, 1 insertions, 1 deletions
diff --git a/src/regposix.c b/src/regposix.c
index 32b11b5..0fdbcbb 100644
--- a/src/regposix.c
+++ b/src/regposix.c
@@ -40,7 +40,7 @@
   if (ONIGENC_MBC_MINLEN(enc) == 1) { \
     UChar* tmps = (UChar* )(s); \
     while (*tmps != 0) tmps++; \
-    len = tmps - (UChar* )(s); \
+    len = (int )(tmps - (UChar* )(s));\
   } \
   else { \
     len = onigenc_str_bytelen_null(enc, (UChar* )s); \