diff --git a/contrib/seekable_format/zstd_seekable.h b/contrib/seekable_format/zstd_seekable.h
index 54b50fa5..71b4c0be 100644
--- a/contrib/seekable_format/zstd_seekable.h
+++ b/contrib/seekable_format/zstd_seekable.h
@@ -16,8 +16,6 @@ static const unsigned ZSTD_seekTableFooterSize = 9;
 /* Limit the maximum size to avoid any potential issues storing the compressed size */
 #define ZSTD_SEEKABLE_MAX_FRAME_DECOMPRESSED_SIZE 0x80000000U
 
-#define ZSTD_SEEKABLE_FRAMEINDEX_TOOLARGE (0ULL-2)
-
 /*-****************************************************************************
 *  Seekable Format
 *
@@ -137,14 +135,14 @@ ZSTDLIB_API size_t ZSTD_seekable_initFile(ZSTD_seekable* zs, FILE* src);
 ZSTDLIB_API size_t ZSTD_seekable_decompress(ZSTD_seekable* zs, void* dst, size_t dstSize, unsigned long long offset);
 ZSTDLIB_API size_t ZSTD_seekable_decompressFrame(ZSTD_seekable* zs, void* dst, size_t dstSize, unsigned frameIndex);
 
+#define ZSTD_SEEKABLE_FRAMEINDEX_TOOLARGE (0ULL-2)
 /*===== Seek Table access functions =====*/
 ZSTDLIB_API unsigned ZSTD_seekable_getNumFrames(ZSTD_seekable* const zs);
 ZSTDLIB_API unsigned long long ZSTD_seekable_getFrameCompressedOffset(ZSTD_seekable* const zs, unsigned frameIndex);
 ZSTDLIB_API unsigned long long ZSTD_seekable_getFrameDecompressedOffset(ZSTD_seekable* const zs, unsigned frameIndex);
 ZSTDLIB_API size_t ZSTD_seekable_getFrameCompressedSize(ZSTD_seekable* const zs, unsigned frameIndex);
 ZSTDLIB_API size_t ZSTD_seekable_getFrameDecompressedSize(ZSTD_seekable* const zs, unsigned frameIndex);
-
-ZSTDLIB_API unsigned ZSTD_seekable_offsetToFrame(ZSTD_seekable* const zs, unsigned long long offset);
+ZSTDLIB_API unsigned ZSTD_seekable_offsetToFrameIndex(ZSTD_seekable* const zs, unsigned long long offset);
 
 /*===== Seekable advanced I/O API =====*/
 typedef int(ZSTD_seekable_read)(void* opaque, void* buffer, size_t n);
@@ -154,7 +152,6 @@ typedef struct {
     ZSTD_seekable_read* read;
     ZSTD_seekable_seek* seek;
 } ZSTD_seekable_customFile;
-
 ZSTDLIB_API size_t ZSTD_seekable_initAdvanced(ZSTD_seekable* zs, ZSTD_seekable_customFile src);
 
 #if defined (__cplusplus)
diff --git a/contrib/seekable_format/zstdseek_decompress.c b/contrib/seekable_format/zstdseek_decompress.c
index 9bcfea91..a9e87577 100644
--- a/contrib/seekable_format/zstdseek_decompress.c
+++ b/contrib/seekable_format/zstdseek_decompress.c
@@ -192,11 +192,11 @@ size_t ZSTD_seekable_free(ZSTD_seekable* zs)
     return 0;
 }
 
-/** ZSTD_seekable_offsetToFrame() :
+/** ZSTD_seekable_offsetToFrameIndex() :
  *  Performs a binary search to find the last frame with a decompressed offset
  *  <= pos
  *  @return : the frame's index */
-U32 ZSTD_seekable_offsetToFrame(ZSTD_seekable* const zs, U64 pos)
+U32 ZSTD_seekable_offsetToFrameIndex(ZSTD_seekable* const zs, U64 pos)
 {
     U32 lo = 0;
     U32 hi = zs->seekTable.tableLen;
@@ -373,7 +373,7 @@ size_t ZSTD_seekable_initAdvanced(ZSTD_seekable* zs, ZSTD_seekable_customFile sr
 
 size_t ZSTD_seekable_decompress(ZSTD_seekable* zs, void* dst, size_t len, U64 offset)
 {
-    U32 targetFrame = ZSTD_seekable_offsetToFrame(zs, offset);
+    U32 targetFrame = ZSTD_seekable_offsetToFrameIndex(zs, offset);
     do {
         /* check if we can continue from a previous decompress job */
         if (targetFrame != zs->curFrame || offset != zs->decompressedOffset) {
@@ -422,7 +422,7 @@ size_t ZSTD_seekable_decompress(ZSTD_seekable* zs, void* dst, size_t len, U64 of
 
                 if (zs->decompressedOffset < offset + len) {
                     /* go back to the start and force a reset of the stream */
-                    targetFrame = ZSTD_seekable_offsetToFrame(zs, zs->decompressedOffset);
+                    targetFrame = ZSTD_seekable_offsetToFrameIndex(zs, zs->decompressedOffset);
                 }
                 break;
             }