diff --git a/core/src/fxge/android/fpf_skiafont.cpp b/core/src/fxge/android/fpf_skiafont.cpp
index 40b1886..2dad010 100644
--- a/core/src/fxge/android/fpf_skiafont.cpp
+++ b/core/src/fxge/android/fpf_skiafont.cpp
@@ -159,12 +159,13 @@
 FX_DWORD CFPF_SkiaFont::GetFontData(FX_DWORD dwTable, uint8_t* pBuffer, FX_DWORD dwSize)
 {
     if (!m_Face) {
-        return FALSE;
-    }
-    if (FXFT_Load_Sfnt_Table(m_Face, dwTable, 0, pBuffer, (unsigned long*)&dwSize)) {
         return 0;
     }
-    return dwSize;
+    FT_ULong ulSize = pdfium::base::checked_cast<FT_ULong>(dwSize);
+    if (FXFT_Load_Sfnt_Table(m_Face, dwTable, 0, pBuffer, &ulSize)) {
+        return 0;
+    }
+    return pdfium::base::checked_cast<FX_DWORD>(ulSize);
 }
 FX_BOOL CFPF_SkiaFont::InitFont(CFPF_SkiaFontMgr *pFontMgr, CFPF_SkiaFontDescriptor *pFontDes, const CFX_ByteStringC& bsFamily, FX_DWORD dwStyle, uint8_t uCharset)
 {