diff --git a/src/ports/SkFontHost_FreeType.cpp b/src/ports/SkFontHost_FreeType.cpp
index f94ac82..3a32ea4 100644
--- a/src/ports/SkFontHost_FreeType.cpp
+++ b/src/ports/SkFontHost_FreeType.cpp
@@ -1447,7 +1447,7 @@
     if (offset > tableLength) {
         return 0;
     }
-    FT_ULong size = SkTMin(length, tableLength - offset);
+    FT_ULong size = SkTMin((FT_ULong)length, tableLength - (FT_ULong)offset);
     if (NULL != data) {
         error = FT_Load_Sfnt_Table(face, tag, offset, reinterpret_cast<FT_Byte*>(data), &size);
         if (error) {